@article{IVM_1981_1_a10,
     author = {L. S. Nechitailova},
     title = {Infinitesimal transformations of $n$-orthogonal systems in {a~Riemannian~}$V_n$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {72--78},
     year = {1981},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1981_1_a10/}
}