@article{DAN_1991_317_3_a10,
     author = {M. E. Lerner},
     title = {On the formulation and solvability of a class of boundary value problems for the {Lavrent'ev--Bitsadze} equation},
     journal = {Doklady Akademii Nauk},
     pages = {561--565},
     publisher = {mathdoc},
     volume = {317},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_317_3_a10/}
}