%0 Journal Article
%A N. Yu. Kapustin
%A K. B. Sabitov
%T Solution of a problem in the theory of the Frankl' problem for equations of mixed type
%J Differencialʹnye uravneniâ
%D 1991
%P 60-68
%V 27
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1991_27_1_a7/
%G ru
%F DE_1991_27_1_a7