@article{DE_1991_27_5_a10,
     author = {A. B. Bazarbekov},
     title = {A criterion for the existence of a strong solution of the {Tricomi} problem for the {Gellerstedt} equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {810--815},
     year = {1991},
     volume = {27},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_5_a10/}
}