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@article{IVM_1966_3_a7, author = {Yu. I. Ermakov}, title = {Surfaces of a~special form in the affine and projective spaces}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {60--67}, publisher = {mathdoc}, number = {3}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1966_3_a7/} }
Yu. I. Ermakov. Surfaces of a~special form in the affine and projective spaces. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1966), pp. 60-67. http://geodesic.mathdoc.fr/item/IVM_1966_3_a7/