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@article{DAN_1968_179_1_a4, author = {I. S. Ovchinnikov}, title = {The nonexistence of mappings of class $BL^{n/2}$ of a ball onto a region}, journal = {Doklady Akademii Nauk}, pages = {24--27}, publisher = {mathdoc}, volume = {179}, number = {1}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_179_1_a4/} }
I. S. Ovchinnikov. The nonexistence of mappings of class $BL^{n/2}$ of a ball onto a region. Doklady Akademii Nauk, Tome 179 (1968) no. 1, pp. 24-27. http://geodesic.mathdoc.fr/item/DAN_1968_179_1_a4/