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@article{DAN_1971_196_3_a4, author = {R. I. Kachurovskii}, title = {On nonlinear operators whose ranges are subspaces}, journal = {Doklady Akademii Nauk}, pages = {508--511}, publisher = {mathdoc}, volume = {196}, number = {3}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1971_196_3_a4/} }
R. I. Kachurovskii. On nonlinear operators whose ranges are subspaces. Doklady Akademii Nauk, Tome 196 (1971) no. 3, pp. 508-511. http://geodesic.mathdoc.fr/item/DAN_1971_196_3_a4/