@article{IVM_1990_8_a5,
     author = {\"U. G. Lumiste},
     title = {Irreducible normally flat semisymmetric {submanifolds.~I}},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {45--53},
     year = {1990},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1990_8_a5/}
}