After a three-semester stay in Göttingen during the years 1910–1912, he became in 1912 an assistant and from 1913 a Privatdozent at the University of Vienna.
Nach einem dreisemestrigen Aufenthalt in Göttingen in den Jahren 1910–12 war er ab 1912 Assistent und ab 1913 Privatdozent an der Universität Wien.