@article{DE_1993_29_8_a14,
     author = {M. M. Ovezova},
     title = {On the {Tricomi} problem with generalized gluing conditions for a system of equations of mixed type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1408--1414},
     publisher = {mathdoc},
     volume = {29},
     number = {8},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1993_29_8_a14/}
}