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@article{IVM_1960_6_a3, author = {Yu. F. Borisov}, title = {Mappings of {a~pseudo-Euclidean} space which preserve isotropic vectors}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {31--39}, publisher = {mathdoc}, number = {6}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1960_6_a3/} }
Yu. F. Borisov. Mappings of a~pseudo-Euclidean space which preserve isotropic vectors. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1960), pp. 31-39. http://geodesic.mathdoc.fr/item/IVM_1960_6_a3/