%0 Journal Article %A A. A. Polosin %T On a boundary value problem for an equation of mixed type with two parallel lines of degeneracy %J Differencialʹnye uravneniâ %D 1995 %P 168-170 %V 31 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1995_31_1_a26/ %G ru %F DE_1995_31_1_a26