@article{DE_1998_34_12_a9,
     author = {A. P. Soldatov},
     title = {The {Riemann--Hilbert} problem for the {Lavrent'ev--Bitsadze} system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1649--1659},
     publisher = {mathdoc},
     volume = {34},
     number = {12},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_12_a9/}
}