%0 Journal Article
%A N. V. Efimov
%A Z. D. Usmanov
%T Infinitesimal bending of a surface with a point of flatness
%J Doklady Akademii Nauk
%D 1973
%P 28-31
%V 208
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1973_208_1_a5/
%G ru
%F DAN_1973_208_1_a5