Stefanović was a top-prize winner or finalist in the major Yugoslavian and international competitions , including the competitions in Sarajevo ( 1952 ) , Skopje ( 1954 ) , Ljubljana ( 1956 ) , Moscow ( 1957 ) , Munich ( 1957 ) , Geneva ( 1957 ) and Prague ( 1959 ) .
Stefanovic was a top-prize winner or finalist in the major Yugoslavian and international competitions , including the competitions in Sarajevo ( 1952 ) , Skopje ( 1954 ) , Ljubljana ( 1956 ) , Moscow ( 1957 ) , Munich ( 1957 ) , Geneva ( 1957 ) and Prague ( 1959 ) .