@article{DAN_1961_139_2_a1,
     author = {G. V. Arzhanov},
     title = {Solvability of a type of non-linear boundary-value problem},
     journal = {Doklady Akademii Nauk},
     pages = {267--270},
     publisher = {mathdoc},
     volume = {139},
     number = {2},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_2_a1/}
}