@article{TM_1992_193_a8,
     author = {Yu. G. Borisovich},
     title = {Topological characteristics of infinite-dimensional mappings and the solvability of nonlinear boundary value problems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {42--48},
     publisher = {mathdoc},
     volume = {193},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1992_193_a8/}
}