@article{IVM_1994_3_a6,
     author = {V. S. Malakhovskii},
     title = {Congruences of horospheres, horocycles, equidistant surfaces and equidistant curves in three-dimensional {Lobachevski\u{i}} space},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {35--40},
     publisher = {mathdoc},
     number = {3},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1994_3_a6/}
}