%0 Journal Article %A A. Krapež %T Some significant results of Janez Ušan %J Novi Sad Journal of Mathematics %D 2007 %P 1-10 %V 37 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/NSJOM_2007_37_2a_0/ %F NSJOM_2007_37_2a_0