@article{DE_1986_22_1_a7,
     author = {N. Yu. Kapustin},
     title = {Solvability in the class $L_2$ of the {Tricomi} problem for a parabolic-hyperbolic equation with a degenerate hyperbolic part},
     journal = {Differencialʹnye uravneni\^a},
     pages = {60--66},
     publisher = {mathdoc},
     volume = {22},
     number = {1},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_1_a7/}
}