@article{IVM_2004_5_a6,
     author = {V. T. Lisitsa},
     title = {Multidimensional surfaces with a flat normal connection with constant curvature of the {Grassmann} image},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {47--51},
     publisher = {mathdoc},
     number = {5},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2004_5_a6/}
}