%0 Journal Article %A A. V. Pogorelov %T On the mean curvature of an infinite complete convex surface %J Doklady Akademii Nauk %D 1971 %P 788-789 %V 197 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1971_197_4_a12/ %G ru %F DAN_1971_197_4_a12