@article{DE_1981_17_5_a11,
     author = {T. Sh. Kal'menov and M. O. Otelbaev},
     title = {Regular boundary value problems for the {Lavrent'ev{\textendash}Bicadze} equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {873--885},
     year = {1981},
     volume = {17},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_5_a11/}
}