@article{DAN_1964_156_2_a10,
     author = {G. P. Cherepanov},
     title = {The {Riemann--Hilbert} problem for the region exterior to a set of cuts along a line or a circle},
     journal = {Doklady Akademii Nauk},
     pages = {275--277},
     publisher = {mathdoc},
     volume = {156},
     number = {2},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_156_2_a10/}
}