@article{DAN_1986_289_6_a8,
     author = {K. N. Soltanov},
     title = {Nonlinear mappings and the solvability of nonlinear equations},
     journal = {Doklady Akademii Nauk},
     pages = {1318--1323},
     year = {1986},
     volume = {289},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_289_6_a8/}
}