In 1930–31 he also studied at the Zagreb University and summer school at the Archaeology Institute in Feistritz (Bistrica).
He also studied at Vienna and Prague (Institute of N. P. Kondakov and Karlov University), and in 1933 worked at archaeological sites and museums in Venice, Aquilea and Grado.
His doctoral thesis Portreti srpskih vladara u srednjem veku ("Portraits of Serbian rulers in the Middle Ages") was defended in Ljubljana on 30 October 1934, and it was published the same year in Skopje as a publication of the Museum of South Serbia.
After World War II, he participated in the re-establishment of the Department of Art History at the University of Belgrade's Faculty of philosophy.
Many questions that he raised in his writings were later the subject of study by his former students and disciples.