@article{TM_1978_148_a11,
     author = {I. S. Gutsul and V. S. Makarov},
     title = {On a~property of {Fedorov} groups in {Lobachevsky} space},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {106--108},
     publisher = {mathdoc},
     volume = {148},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1978_148_a11/}
}