%0 Journal Article
%A K. B. Sabitov
%T On the theory of the Frankl problem for equations of mixed type
%J Izvestiya. Mathematics 
%D 2017
%P 99-136
%V 81
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_2017_81_1_a3/
%G en
%F IM2_2017_81_1_a3