@article{DAN_1958_121_5_a11,
     author = {P. I. Shveikin},
     title = {Invariant constructions on $m$-dimentional surface in $n$-dimentional affine space},
     journal = {Doklady Akademii Nauk},
     pages = {811--814},
     year = {1958},
     volume = {121},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1958_121_5_a11/}
}