%0 Journal Article
%A D. Bazarov
%T An analogue of the Frankl's problem for a three-dimensional equation of mixed type
%J Doklady Akademii Nauk
%D 1990
%P 169-171
%V 314
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1990_314_1_a40/
%G ru
%F DAN_1990_314_1_a40