%0 Journal Article %A V. S. Malakhovskii %T Congruences of horospheres, horocycles, equidistant surfaces and equidistant curves in three-dimensional Lobachevskiĭ space %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1994 %P 35-40 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1994_3_a6/ %G ru %F IVM_1994_3_a6