@article{DAN_1974_218_5_a3,
     author = {S. L. Krushkal'},
     title = {On some properties of {Kleinian} groups and their deformations},
     journal = {Doklady Akademii Nauk},
     pages = {1013--1016},
     publisher = {mathdoc},
     volume = {218},
     number = {5},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_218_5_a3/}
}