@article{DAN_1987_296_4_a6,
     author = {A. S. Sorokin},
     title = {The {M.~V.~Keldysh{\textendash}L.~I.~Sedov} problem for multiply connected circular domains},
     journal = {Doklady Akademii Nauk},
     pages = {801--804},
     year = {1987},
     volume = {296},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_296_4_a6/}
}