%0 Journal Article
%A N. V. Efimov
%T Qualitative problems of the theory of deformations of surfaces in the small
%J Informatics and Automation
%D 1949
%P 3-128
%V 30
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1949_30_a0/
%G ru
%F TRSPY_1949_30_a0