After this, he focused on his doctoral thesis Avinjonske pape i srpske zemlje, which he defended in 1934 and published in his hometown.
His work was very successful, and he was appointed assistant professor of history at the University of Skopje.
In 1941, while a docent, he was imprisoned by the Germans due to his status as a reserve officer.
He then moved to England, where he from January 1948 to January 1949 held history classes on the Serbian Church in the Seminary for Serb pupils in the Dorchester College near Oxford.
After this he was employed as the secretary of the Serbian ecclesiastical school municipality "St. Sava" in London, where he died on 12 December 1976.