@article{DE_1996_32_3_a13,
     author = {S. P. Mitin and A. P. Soldatov},
     title = {On the solvability of the generalized mixed problem},
     journal = {Differencialʹnye uravneni\^a},
     pages = {384--388},
     publisher = {mathdoc},
     volume = {32},
     number = {3},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1996_32_3_a13/}
}