@article{DE_1988_24_4_a12,
     author = {M. M. Zainulabidov},
     title = {On the mixed problem $M$ when the domain of parabolicity is two-dimensional},
     journal = {Differencialʹnye uravneni\^a},
     pages = {644--649},
     publisher = {mathdoc},
     volume = {24},
     number = {4},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1988_24_4_a12/}
}