%0 Journal Article
%A S. Ya. Gusman
%T Schottky--Ahlfors forms and certain extremal problems on differentiable manifolds
%J Doklady Akademii Nauk
%D 1966
%P 246-248
%V 170
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1966_170_2_a2/
%G ru
%F DAN_1966_170_2_a2