%0 Journal Article
%A H. M. Nadzafov
%T On the Tricomi problem for a second order linear equation of mixed type
%J Differencialʹnye uravneniâ
%D 1976
%P 763-765
%V 12
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1976_12_4_a22/
%G ru
%F DE_1976_12_4_a22