%0 Journal Article %A Hadžić Olga %T On the Chi Song Wong's class U(X) in locally convex spaces %J Novi Sad Journal of Mathematics %D 1975 %P 19-21 %V 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/NSJOM_1975_5_Nonea_3/ %F NSJOM_1975_5_Nonea_3