In 1954 he moved to Brooklyn to work under Professor Greogr at the Polytechnic Institute. In 1957, after returning to Ljubljana, he obtained his PhD. He was appointed an associate professor in 1960, and a professor in 1965.
He started working in Brooklyn in 1954 under Professor Greogr at the Polytechnic Institute. Upon returning to Ljubljana in 1957, he completed his doctoral studies. He was promoted to associate professor in 1960 and then to full professor in 1965.