%0 Journal Article
%A I. A. Kiiko
%T Variation principle in problems concerned with a flow of a thin layer of plastic material
%J Doklady Akademii Nauk
%D 1964
%P 551-553
%V 157
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1964_157_3_a15/
%G ru
%F DAN_1964_157_3_a15