%0 Journal Article
%A V. I. Bernik
%A É. I. Kovalevskaya
%T Extremal property of some surfaces in $n$-dimensional Euclidean space
%J Matematičeskie zametki
%D 1974
%P 247-254
%V 15
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1974_15_2_a9/
%G ru
%F MZM_1974_15_2_a9