He studied in Regensburg , then in Munich , where Joseph Haas was among his teachers , and in Berlin where in 1925 he gained a Ph.D.. He studied in Regensburg , then in Munich , where Joseph Haas was among his teachers , and in Berlin , where he received a doctorate in 1925 .
Beliau belajar di Regensburg, kemudian di Munich, di mana Joseph Haas adalah antara guru-gurunya, dan di Berlin di mana pada tahun 1925 beliau mendapat Ph.D.. Beliau belajar di Regensburg, kemudian di Munich, di mana Joseph Haas adalah antara gurunya, dan di Berlin, di mana beliau menerima ijazah doktor falsafah pada tahun 1925.