%0 Journal Article
%A D. K. Gvazava
%T Certain estimates for equations of mixed type
%J Differencialʹnye uravneniâ
%D 1972
%P 17-23
%V 8
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1972_8_1_a2/
%G ru
%F DE_1972_8_1_a2