@article{RM_1965_20_3_a21,
     author = {I. A. Bakhtin},
     title = {On topological methods for investigating of solutions for a~class of non-linear equations},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1965},
     volume = {20},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1965_20_3_a21/}
}