@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/}
}