@article{IVM_1976_8_a11,
     author = {T. V. Chekmarev},
     title = {A~modified {Tricomi} problem for a~system of {Lavrent'ev--Bicadze} equations},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {85--93},
     publisher = {mathdoc},
     number = {8},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1976_8_a11/}
}