%0 Journal Article
%A L. I. Kamynin
%A B. N. Khimchenko
%T An aspect of the development of the theory of the isotropic strict extremum principle 

%J Differencialʹnye uravneniâ
%D 1980
%P 280-292
%V 16
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1980_16_2_a10/
%G ru
%F DE_1980_16_2_a10