@article{DAN_1966_171_1_a0,
     author = {P. A. Biluta},
     title = {Extremal quasiconformal mappings for arbitrary plane regions},
     journal = {Doklady Akademii Nauk},
     pages = {9--12},
     publisher = {mathdoc},
     volume = {171},
     number = {1},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_171_1_a0/}
}