Principality of Serbia (medieval)
|This article needs additional citations for verification. (March 2012)|
Serbia, during the rule of Časlav (927–960)
|Languages||Serbian (Old Serbian)|
|Religion||Slavic polytheism (768–869)
† Eastern Christianity (Orthodoxy)
|-||c. 780||Višeslav (first)|
|-||850–891||Mutimir (first Christian)|
|Today part of|| Serbia
The Principality of Serbia or Serbian Principality (Serbian: Cрпска кнежевина/Srpska kneževina) was an early medieval state of the Serbs ruled by the Vlastimirović dynasty, that existed from c. 780 to 969 in Southeastern Europe. Its first ruler known by name was Višeslav. In 822, the Serbs were said to rule the "greater part of Dalmatia", and at the same time the Bulgars had taken the lands to the east, preparing to conquer Serbia. Vlastimir defeated the Bulgar army in a three-year-war (839–842), and the two powers lived in peace for some decades. Vlastimir's three sons succeeded in ruling Serbia together, although not for long; Serbia became a key part in the power struggle between the Byzantines and Bulgars (in predominantly Byzantine alliance), which also resulted in major dynastic civil wars for a period of three decades. Serbia was annexed by the Bulgars for three years (924–927), until the return of the political hostage Prince Časlav, who united several provinces, becoming the most powerful of the Vlastimirović. An important event was the establishment of Christianity as state-religion in 869 AD, and the founding of the first Serbian eparchy, the Eparchy of Ras. The information of the Vlastimirović dynasty ends with De Administrando Imperio (fl. 950–960). Serbia was annexed by the Byzantines in 969 and ruled as the Catepanate of Ras.
- 1 Background
- 2 History
- 3 Cities
- 4 Culture
- 5 See also
- 6 References
- 7 External links
The Serbs, a Slavic people, specifically of the South Slavic subgroup, has its origins in the 6th-7th century communities that developed in Southeastern Europe (the Migration Period). Slav raids on Eastern Roman territory are mentioned in 518, and by the 580s they had conquered large areas referred to as Sclavinia (transl. Slavdom, from Sklavenoi – Σκλαυηνοι, the early South Slavic tribe which is eponymous to the current ethnic and linguistic Indo-European people).
During Byzantine rule, the archon was overseen by the strategoi (provincial military [and civil] governors) in the nearby Byzantine cities. The Emperor later recognized the Serb realm in turn for military aid (foederati) and nominal overlordship of the Emperor.
Serbian-Bulgarian frontier (805–818)
In the east, the Bulgarian Empire grew strong. In 805, khan Krum conquered the Braničevci, Timočani and Obotrites, to the east of Serbia, and banished their tribal chiefs and replaced them with administrators appointed by the central government. In 815, the Bulgarians and Byzantines signed a 30-year peace treaty. In 818 during the rule of Omurtag (814–836), the Braničevci and Timočani together with other tribes of the frontiers, revolted and seceded from Bulgaria because of an administrative reform that had deprived them much of their local authority. The Timočani left the societas (association, alliance) of the Bulgarian Empire, and sought, together with the Danubian Obotrites and Guduscani, protection from Holy Roman Emperor Louis the Pious (r. 813–840), and met him at his court at Herstal. The Timočani migrated into Frankish territory, somewhere in Lower Pannonia, and were last mentioned in 819, when they were persuaded by Ljudevit to join him in fighting the Franks. The Danubian Obotrites stayed in Banat, and resisted the Bulgars until 824, when nothing more is heard of them. The khan sent envoys to the Franks and requested that the precise boundary be demarcated between them, and negotiations lasted until 826, when the Franks neglected him. The Bulgars answered with attacking the Slavs that lived in Pannonia, and subjugated them, then they sent ships up the Drava river, and, in 828, had devastated Upper Pannonia, north of the Drava. There was more fighting in 829, as well, and by this time, the Bulgars had conquered all of their former Slavic allies.
The Bulgarian Khanate (later Empire) had a general policy of expansion in which they would first impose the payment of tribute on a neighboring people and the obligation of supplying military assistance in the form of an alliance (societas), leaving them internal self-government and local rulers, and when the need for this kind of relationship expired, they would terminate the self-government of the said people and impose their direct and absolute power, integrating them fully into the Bulgarian political and cultural system.
Prince Višeslav (fl. 768–814), the first known Serbian monarch by name, ruled the hereditary lands (Županias, counties) of Neretva, Tara, Piva, Lim. He managed to unite several more provinces and tribes into what was known as Serbia. Višeslav was succeeded by his son Radoslav and then Prosigoj, during which "Serbs inhabit the greater part of Dalmatia" (Royal Frankish Annals, 822). At this time, there was peace with the eastern neighbours, the Bulgarians, who had begun to expand their territory significantly (see next section). Prosigoj's son, Prince Vlastimir, further expanded the realm, which prompted the Bulgarians, who had already taken parts of Macedonia, to invade in 839. The invasion led to a three-year-war, which ended in 842, with a decisive Serbian victory. The Bulgarians were driven out and Vlastimir expanded to the west and south, meanwhile the Bulgarians had taken most of modern Serbia's east. Prince Mutimir (r. 851–891), the son of Vlastimir, managed to defeat the Bulgarians once again in 834–835, also capturing the son of the Bulgarian Khan. The Serbs and the Bulgarians concluded peace, and the Christianization of the Slavs began; by the 870s the Serbs were baptized and had established the Eparchy of Ras, on the order of Emperor Basil I. The remaining years well into the 920s are characterized by civil wars; succession wars between the branches of the Vlastimirović Dynasty.
The Serbian realm gained more power by the turn of the 9th century. At this time, the Bulgarian Khanate was expanding westward, and had already annexed the Slavic tribes of Syrmia and eastern Slavonia. At the same time, it pushed into Macedonia to the south, effectively encircling the Serbs. As a response to this, in Byzantine alliance, the Serbian Županate was led by Knez (‘Prince’) Vlastimir – the founder of the Vlastimirović dynasty, to counter the Bulgars. The extent of the realm corresponds to modern southern Serbia, southeastern Bosnia, eastern Herzegovina and Konavli. At the Adriatic coastline existed a minor 'principality', Pagania. Travunia and Zachlumia were formed after the Bulgaro-Serbian Wars, evolving from city-states to broader administrative regions.
The Bulgaro-Serbian War took place 836–846 and ended with Serbian victory. Vlastimir gave his daughter's hand to Krajina Belojević, the son of the local lord Beloje of Trebinje. This established Travunia as a principality part of Rascia. Vlastimir's sons- Mutimir, Gojnik and Strojimir- defeated another Bulgarian attack c. 853, capturing Khan Boris’ son, Vladimir, and twelve leading bojars. They escorted Vladimir to Ras, at the Serb-Bulgarian border, exchanged gifts and concluded a peace treaty. However, this early princedom was far from a consolidated, centralized state, and the various zhupans retained considerable independence. Rather than practising primogeniture, Slavic rulers practiced staresina, where rule fell upon the eldest person in the extended family (rather than the son of the King). The realm would then be split between the surviving brothers, sons, nephews and cousins. Such tradition repeatedly caused succession strife.
Mutimir was baptized by missionaries Cyril and Methodius during the rule of Byzantine Emperor Basil I (867–886), who sent the priests after Mutimir acknowledged Byzantine suzerainty. The Serbs were fully Christianized by 873, seen in the tradition of theophoric names (e.g. Petar Gojniković, Pavle Branović) and the fact that he maintained the communion with the Eastern Church (Constantinople) when Pope John VIII invited him to recognize the jurisdiction of the bishopric of Sirmium. The Serbs and Bulgarians adopted the Old Slavonic liturgy instead of the Greek.
Wars of the throne
Sometime after defeating the Bulgarians, Mutimir ousted his brothers (who fled to Bulgaria). He kept Gojnik’s son Petar Gojniković in his court, but he managed to escape to Croatia. Mutimir ruled until 890, being succeeded by his son Prvoslav. However, Prvoslav was overthrown by Petar Gojniković, who had returned from his exile in Croatia c. 892. The name Peter the Christian; suggesting that Christianity had started to permeate into Serbia, undoubtedly through Serbia’s contacts with the Bulgarians and Byzantines. Peter secured himself on the throne (after fending off a challenge from Klonimir, son of Stojmir) and was recognised by Tsar Symeon I of Bulgaria. An alliance was signed between the two states. Already having Travunia’s loyalty, Peter began to expand his state north and west. He annexed the Bosna River valley, and then moved west securing allegiance from the Pagania – who were fiercely independent, pirateering Serbian tribe. However, Peter’s expansion into Dalmatia brought him into conflict with Prince Michael of Zahumlje. Michael had also grown powerful, ruling not only Zachlumia, but exerting his influence over Travunia and Dioklea. Porphyrogenitus explains that Michael’s roots were different from Vlastimirović dynasty, and was unwilling to yield authority to Peter.
Although allied to Symeon, Peter became increasingly disgruntled by the fact that he was essentially subordinate to him. Peter’s expansion toward the coast facilitated contacts with the Byzantines, by way of the strategos of Dyrrhachium. Searching for allies against Bulgaria, the Byzantines showered Peter with gold and promises of greater independence if he would join their alliance - a convincing strategy. Peter might have been planning an attack on Bulgaria with the Magyars, showing that his realm had stretched north to the Sava river. However, Michael of Zahumlje forewarned Symeon of this plan, since Michael was an enemy of Peter, and a loyal vassal of Symeon. What followed was multiple Bulgarian interventions and a succession of Serb rulers. Symeon attacked Serbia (in 917) and deposed Peter, placing Pavle Branović (a grandson of Mutimir) as Prince of Serbia, subordinate to Symeon (although some scholars suggest that Symeon took control over Serbia directly at this time. Unhappy with this, the Byzantines then sent Zaharije Prvoslavljevic in 920 to oust Pavle, but he failed and was sent to Bulgaria as prisoner. The Byzantines then succeeded in turning Prince Pavle to their side. In turn, the Bulgarians started indoctrinating Zaharije. Zaharije invaded Serbia with a Bulgarian force, and ousted his cousin Pavel in 922. However, he too turned to Byzantium. A punitive force sent by the Bulgarians was defeated.Thus we see a continuous cycle of dynastic strife amongst Vlastimir’s successors, stirred on by the Byzantine and Bulgarians, who were effectively using the Serbs as pawns. Whilst Bulgarian help was more effective, Byzantine help seemed preferable. Simeon made peace with the Byzantines to settle affairs with Serbia once and for all. Frustrated by the traitorous smaller neighbour militarily, the Bulgarians decided to finish the things once and for all. In 924, he sent a large army accompanied by Časlav, son of Klonimir. The army forced Zaharije to flee to Croatia. The Serbian zhupans were then summoned to recognise Caslav as the new Prince. When they came, however, they were all imprisoned and taken to Bulgaria, as too was Časlav. Much of Serbia was ravaged, and many people fled to Croatia, Bulgaria and Constantinople. Simeon made Serbia into a Bulgarian province, so that Bulgaria now bordered Croatia and Zahumlje. He then resolved to attack Croatia, because it was a Byzantine ally and had sheltered the Serbian Prince.
At the battle of the Bosnian Highlands, Croatian King Tomislav defeated the Bulgarians, whilst Prince Michael of Zahumlje maintained neutrality. During the fall of central Serbia, Michael was the pre-eminent Serb prince, having been awarded the honorary title of patrikios by the Byzantine Emperor, and may have ruled over Zachlumia, Travunia and Dioklea.
Unification under Časlav, annexation of Rascia (927–960)
The Bulgarian rule over Serbia lasted only three years. After Symeon died, Časlav Klonimirović (927- c. 960s) led Serb refugees back to Serbia. He secured the allegiance of the Dalmatian duchies and expelled Bulgarian rule from central Serbia. After Tomislav’s death, Croatia was in near anarchy as his sons vied for sole rule, so Caslav was able to extend his rule north to the Vrbas river (gaining the alliegence of the chiefs of the various Bosnian zhupas).
During this apogee of Serbian power, Christianity and culture penetrated Serbia as the Serb prince lived in peaceful and cordial relations with the Byzantines. However, strong as it had grown to be, Serbia’s power (as other early Slavic states) was only as strong as its ruler. There was no centralised rule, a confederacy of Slavic principalities existed instead. The existence of the unified Grand Principality was dependent on the allegiance of the lesser princes to Caslav. When he died defending Bosnia against Magyar incursions (sometime between 950 and 960), the coalition disintegrated.
After this, there is a gap in the history of hinterland Serbia, in western sources Rascia, as it is annexed by the Byzantine Empire and the Bulgarian Empire. The dynasty continues to rule the maritime regions, and in the 990s, Jovan Vladimir (Vlastimirović) rises as the most powerful Serbian prince, with a realm of present-day Montenegro, eastern Herzegovina, and Koplik in Albania, this state becomes known as Duklja, after the ancient Roman town of Doclea. However, by 997, it had been conquered and made subject to Bulgaria again by tsar Samuel.
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|History of Serbia|
When the Byzantines finally defeated the Bulgarians, they regained control over most of the Balkans for the first time in four centuries. Serbian lands were governed by a strategos presiding over the Theme of Sirmium. However, local Serbian princes continued to reign as suzerains to the Byzantines, maintaining total autonomy over their lands, such as the zhupanate of Rascia while only nominally being Byzantine vassals. Forts were maintained in Belgrade, Sirmium, Niš and Braničevo. These were, for the most part, in the hands of local nobility, which often revolted against Byzantine rule.
Fall and aftermath
After Časlav died ca 960, "Rascia" (hinterland of Serbia) was annexed by the Byzantines (Catepanate of Serbia, 971–976) and Bulgars. Serbia lost its centralized rule and the provinces once again came under the Empire.
Jovan Vladimir emerged as a ruler of a little land called Duklja, centered in Bar on the Adriatic coast, as a Byzantine vassal. His realm was called Serbia, Dalmatia, Sklavonia' etc, and eventually had much of the maritime provinces, including Travunia and Zachlumia. His realm probably stretched into the hinterland to include some parts of Zagorje (inland Serbia and Bosnia) as well. Vladimir’s pre-eminent position over other Slavic nobles in the area explains why Emperor Basil approached him for an anti-Bulgarian alliance. With his hands tied by war in Anatolia, Emperor Basil required allies for his war against Tsar Samuel, who ruled a Bulgarian empire stretched over Macedonia. In retaliation, Samuel invaded Duklja in 997, and pushed through Dalmatia up to the city of Zadar, incorporating Bosnia and Serbia into his realm. After defeating Vladimir, Samuel reinstated him as a vassal Prince. We do not know what Vladimir’s connection was to the previous princes of Serbia, or to the rulers of Croatia- much of what is written in the Chronicle of the Priest of Duklja about the genealogy of the Doclean rulers is mythological. Vladimir was murdered by Vladislav, Samuel’s brother and successor, circa 1016 AD. The last prominent member of his family, his uncle Dragimir, was killed by some local citizens in Kotor in 1018. That same year, the Byzantines had defeated the Bulgarians, and in one masterful stroke re-took virtually the entire Balkans.
According to DAI, baptized Serbia (known erranously in historiography as Raška), included the following cities (καστρα/kastra), in Moravcsik's transcript (1967):
|Destinikon (Δεστινίκον)||Slavicized as Destinik and Dostinik. It was most likely southeast of Ras.
—P. Skok and V. Korać: Drsnik, in Metohija.
—R. Novaković: Gradeš in Gedže, Orahovac
|Tzernabouskeï (Τζερναβουσκέη)||Slavicized as Crnobuški and Černavusk.
|Megyretous (Μεγυρέτους)||Slavicized as Međurečje (meaning "[land] between rivers").
—V. Ćorović: Samobor, Goražde or Soko at Piva-Tara confluence
|Dresneïk (Δρεσνεήκ/Dresneik)||Slavicized as Drežnik and Drsnik.
—V. Ćorović: Drežnik
|Lesnik (Λεσνήκ)||Slavicized as Lešnik and Lesnica
—V. Ćorović: Lešnica
|Salines (Σαληνές)||Slavicized as Soli.
—V. Ćorović: Tuzla
The other Serb-inhabited lands (or principalities) that were mentioned in DAI included the maritime Paganija, Zahumlje and Travunija, while maritime Duklja was held by the Byzantines, it was presumably settled with Serbs as well. All of the maritime lands bordered Serbia to the north.
The establishment of Christianity as state-religion dates to the time of Prince Mutimir and Byzantine Emperor Basil I (r. 867–886), who, after managing to put the Serbs under his nominal rule, sends priests together with admiral Niketas Ooryphas, before the operations against the Saracens in 869 when Dalmatian fleets were sent to defend the town of Ragusa).
The Christianization was due partly to Byzantine and subsequent Bulgarian influence. It is important to note that at least during the rule of Kotsel of Pannonia (861–874), communications between Serbia and Great Moravia must have been possible. This fact, the pope was presumably aware of, when planning Methodios' diocese as well as the Dalmatian coast, which was in Byzantine hands as far north as Split. There is a possibility that some Cyrillomethodian pupils reached Serbia in the 870s, perhaps even sent by Methodius himself. Serbia is accounted Christian as of about 870.
The first Serbian bishopric was founded at the political center at Ras, near modern Novi Pazar on the Ibar river. The initial affiliation is uncertain, it may have been under the subordination of either Split or Durazzo, both then Byzantine. The early church of Saint Apostles Peter and Paul at Ras, can be dated to the 9th–10th century, with the rotunda plan characteristic of first court chapels. The bishopric was established shortly after 871, during the rule of Mutimir, and was part of the general plan of establishing bishoprics in the Slav lands of the Empire, confirmed by the Council of Constantinople in 879–880. The Eparchy of Braničevo was founded in 878 (as continuation of Viminacium and Horreum Margi). The seal of Strojimir (died between 880–896), the brother of Mutimir, was bought by the Serbian state in an auction in Germany. The seal has a Patriarchal cross in the center and Greek inscriptions that say: "God, help Strojimir (CTPOHMIP)".
Petar Gojniković (r. 892–917), was evidently a Christian prince. Christianity presumably was spreading in his time, also since Serbia bordered Bulgaria, Christian influences and perhaps missionaries came from there. This would increase in the twenty-year peace. The previous generation (Mutimir, Strojimir and Gojnik) had Slav names, the following (Petar, Stefan, Pavle, Zaharija) has Christian names, a notice of strong Byzantine missions to Serbia, as well as to the Slavs of the Adriatic coast, in the 870s.
The Bulgarian annexation of Serbia in 924 was important for the future direction of the Serbian church. By now, at latest, Serbia must have received the Cyrillic alphabet and Slavic religious text, already familiar but perhaps not yet preferred to Greek.
- Church of Saint Apostles Peter and Paul (Novi Pazar)
- Sočanica basilica
- Gradina, Sebečevska reka, in Raška
- Gradina Martinića, Zeta
- Gradina, Brsenica, near Sjenica
- Gradina on Jelica, near Čačak
- Gradina on Postenj, near Petar's Church
- List of Serbian monarchs
- Names of Serbia
- Serbia in the Middle Ages
- White Serbia (before 610)
- Serbian Grand Principality (1091–1217)
- Serbian Kingdom (1217–1345)
- Serbian Empire (1345–1371)
- Fall of the Serbian Empire (1371–1402)
- Serbian Despotate (1402–1459)
- "Slavyane v rannem srednevekovie" Valentin V. Sedov (Russian language), Archaeological institute of Russian Academy of Sciences, Moscow, 1995[page needed]
- Bulgarian Academy of Sciences 1966, p. 66
- Živković 2006, p. 13
- Slijepčević 1958, pp. 35, 41, 52
- Komatina 2010, p. 4
- Komatina 2010, p. 19
- Einhard, year 827
- Komatina 2010, p. 24
- "Srpsko Nasledje". srpsko-nasledje.co.rs. Retrieved 25 January 2015.
- Novaković 2010
- Moravcsik 1967, pp. 160–161
- Petar Ž Petrović; Petar Vlahović (1984). Raška: antropogeografska proučavanja. Etnografski institut Srpske akademije nauka i umetnosti. p. 128.
А да је Достиник био на тој страни потврћује и наведенн Порфирогенитов податак о на- паду бугарског штићеника Клонимира на рашког жупана Петра Гојниковића. Долазећи из Бугарске, Клонимир је упао у Рашку негде на ...
- Relja Novaković (1981). Gde se nalazila Srbija od VII do XII veka: istorijsko-geografsko razmatranje : problemi i znanja. Istorijski institut.
Кад бисмо знали да Порфирогенит своје градове набраја неким географским редом и кад бисмо били уверени да је Достиник исто што и Ждрело или Градиште Геђе, онда би Дреенеик био четврти по реду и морао би се ...
- Moravcsik 1967, p. 153, 155
- Vladimir Ćorović (13 January 2014). Istorija srpskog naroda. eBook Portal. pp. 79–. GGKEY:XPENWQLDTZF.
- Fine 1991, p. 53.
- The entry of the Slavs into Christendom, p. 208
- De Administrando Imperio, ch. 29 [Of Dalmatia and of the adjacent nations in it]: "...the majority of these Slavs [Serbs, Croats] were not even baptized, and remained unbaptized for long enough. But in the time of Basil, the Christ-loving emperor, they sent diplomatic agents, begging and praying him that those of them who were unbaptized might receive baptism and that they might be, as they had originally been, subject to the empire of the Romans; and that glorious emperor, of blessed memory, gave ear to them and sent out an imperial agent and priests with him and baptized all of them that were unbaptized of the aforesaid nations..."
- "Vladimir Corovic: Istorija srpskog naroda". rastko.rs. Retrieved 25 January 2015.
- The entry of the Slavs into Christendom, p. 209
- "Diocese of Raska and Prizren". kosovo.net. Retrieved 25 January 2015.
- "www.glas-javnosti.co.yu". glas-javnosti.rs. Retrieved 25 January 2015.
- "The Golden Seal of Stroimir". scribd.com. Retrieved 25 January 2015.
- Fine 1991, p. 141.
- Fine 1991, p. 142.
- Ђорђе Н. Јанковић (2012). "О ПРОУЧАВАЊУ И ПУБЛИКОВАЊУ УТВРЂЕНИХ МЕСТА У СРБИЈИ ИЗ VII-X СТОЛЕЋА". Journal of Serbian Archaeological Society (Belgrade): 313–334.
- Bulgarian Academy of Sciences (1966). Études historiques 3. Éditions de l'Académie bulgare des sciences.
- Bury, J. B. (2008). History of the Eastern Empire from the Fall of Irene to the Accession of Basil: A.D. 802–867. ISBN 1-60520-421-8.
- Ćorović, Vladimir (2001). Istorija srpskog naroda (Internet ed.). Belgrade: Ars Libri.
- Ćirković, Sima M. (2004). The Serbs. Wiley-Blackwell. ISBN 0-631-20471-7.
- Ferjančić, Božidar (1997). "Basile I et la restauration du pouvoir byzantin au IXème siècle" [Vasilije I i obnova vizantijske vlasti u IX veku]. Zbornik radova Vizantološkog instituta (in French) (Belgrade) (36): 9–30.
- Ferjančić, Božidar (2007). Vizantijski izvori za istoriju naroda Jugoslavije II (fototipsko izdanje originala iz 1959 ed.). Belgrade. pp. 46–65. ISBN 978-86-83883-08-0.
- Forbes, Nevill (2004). The Balkans: A History of Bulgaria, Serbia, Greece, Rumania, Turkey. Digital Antiquaria. ISBN 978-1-58057-314-6.
- Fine, John Van Antwerp (1991). The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century. Michigan: The University of Michigan Press. ISBN 0-472-08149-7.
- Komatina, P. (2010). "The Slavs of the mid-Danube basin and the Bulgarian expansion in the first half of the 9th century". Zbornik radova Vizantološkog instituta (Belgrade: Serbian Academy of Sciences and Arts – SASA, Institute for Byzantine Studies) (47): 55–82. doi:10.2298/ZRVI1047055K.
- Novaković, Relja (2010) . "Gde se nalazila Srbija od VII do XII veka: Zaključak i rezime monografije" (Internet ed.).
- Runciman, Steven (1930). A history of the First Bulgarian Empire. London: G. Bell & Sons.
- Slijepčević, Đoko M. (1958). The Macedonian question:the struggle for southern Serbia. American Institute for Balkan Affairs.
- Stephenson, Paul (2000). Byzantium's Balkan Frontier: A Political Study of the Northern Balkans, 900–1204. Cambridge: Cambridge University Press. ISBN 0-521-77017-3.
- Vlasto, A. P. (1970). The Entry of the Slavs into Christendom: An Introduction to the Medieval History of the Slavs. Cambridge: Cambridge University Press. ISBN 978-0-521-07459-9.
- Živković, Tibor (2006). Portreti srpskih vladara (IX—XII vek). Belgrade. pp. 11–20. ISBN 86-17-13754-1.
- Zlatarski, Vasil (1918). История на Първото българско Царство. I. Епоха на хуно-българското надмощие (679—852) (in Bulgarian) (Internet ed.). Sofia.