@article{IVM_1966_5_a10,
     author = {L. N. Krivonosov},
     title = {Parallel and normal correspondence of two-dimensional surfaces in the four-dimensional {Euclidean} space $E_4$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {78--87},
     publisher = {mathdoc},
     number = {5},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1966_5_a10/}
}