%0 Journal Article %A Roman Ger %T Convex functions of higher orders in Euclidean spaces %J Annales Polonici Mathematici %D 1971 %P 293-302 %V 25 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-25-3-293-302/ %R 10.4064/ap-25-3-293-302 %G en %F 10_4064_ap_25_3_293_302