Truce of Adrianople (1547)
The Truce of Adrianople in 1547, named after the Ottoman city of Adrianople (present-day Edirne), was signed between Charles V and Suleiman the Magnificent. Through this treaty, Ferdinand I of Austria and Charles V recognized total Ottoman control of Hungary, and even agreed to pay to the Ottomans a yearly tribute of 30,000 gold florins for their Habsburg possessions in northern and western Hungary. The Treaty followed important Ottoman victories in Hungary, such as the siege of Esztergom (1543).
- Cartography in the traditional Islamic and South Asian societies by John Brian Harley p.245 
- Ground warfare: an international encyclopedia by Stanley Sandler p.387 
- The Cambridge history of Islam by Peter Malcolm Holt p.328