%0 Journal Article
%A P. V. Berkhin
%T On a boundary value problem for equations of composite type
%J Doklady Akademii Nauk
%D 1974
%P 496-498
%V 214
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1974_214_3_a2/
%G ru
%F DAN_1974_214_3_a2