%0 Journal Article
%A L. M. Nevostruev
%A S. P. Pul'kin
%T Some boundary value problems for an equation with two lines of degeneracy
%J Doklady Akademii Nauk
%D 1976
%P 558-561
%V 227
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1976_227_3_a10/
%G ru
%F DAN_1976_227_3_a10