@article{DAN_1987_293_1_a7,
     author = {A. S. Sorokin},
     title = {The {M.} {V.~Keldysh{\textendash}L.} {I.~Sedov} problem for multiply connected circular domains},
     journal = {Doklady Akademii Nauk},
     pages = {41--44},
     year = {1987},
     volume = {293},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_293_1_a7/}
}