Franz was a student of Arnold Sommerfeld at the University of Munich. He was granted his Ph.D. in 1934. In the preface to the book Optik, Sommerfeld cited him for “the most recent and particularly lucid treatment” of the vectorial generalization of Huygens’ principle.
With Adolf Kratzer, another student of Sommerfeld, Franz co-authored the book Transzendente Funktionen. An academic descendent of Franz, Ludwig Tewordt, is cited as having received his Ph.D. at the Westfälische Wilhelms-Universität Münster, in 1953. The article in which Franz independently published the Franz-Keldysh effect was published in 1958.
- Adolf Kratzer and Walter Franz Transzendente Funktionen (Akadem. Verl.-Ges. Geest & Portig, 1960)
- W. Franz Die Streuung von Strahlung am magnetischen Elektron, Annalen der Physik Vol. 425, Issue 8, 689-707 (1938)
- Walter Franz, Einfluß eines elektrischen Feldes auf eine optische Absorptionskante, Z. Naturforschung 13a 484-489 (1958)
- Walter Franz – Mathematics Genealogy Project. The title of his dissertation was Comptoneffekt am gebundenen Elektron.
- Institut für Theoretische Physik I - Friedrich-Alexander-Universität Erlangen-Nürnberg 1934: München, Germany. This reference also cites his birth and death years.
- Arnold Sommerfeld, translated from the first German edition by Otto Laporte and Peter A. Moldauer Optics - Lectures on Theoretical Physics Volume IV (Academic Press, 1964), p. vi
- Walter Franz – Mathematics Genealogy Project.