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@article{IVM_1967_8_a4, author = {A. S. Podkovyrin}, title = {Hupersurfaces in unitary {space.~I}}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {41--52}, publisher = {mathdoc}, number = {8}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1967_8_a4/} }
A. S. Podkovyrin. Hupersurfaces in unitary space.~I. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1967), pp. 41-52. http://geodesic.mathdoc.fr/item/IVM_1967_8_a4/