%0 Journal Article %A E. Malkowsky %A V. Veličković %T On the Gaussian and mean curvature of certain surfaces %J Novi Sad Journal of Mathematics %D 2001 %P 65-73 %V 31 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/NSJOM_2001_31_1a_8/ %F NSJOM_2001_31_1a_8