Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1975_225_1_a1, author = {B. N. Apanasov}, title = {A universal property of {Kleinian} groups in the hyperbolic metric}, journal = {Doklady Akademii Nauk}, pages = {15--17}, publisher = {mathdoc}, volume = {225}, number = {1}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_225_1_a1/} }
B. N. Apanasov. A universal property of Kleinian groups in the hyperbolic metric. Doklady Akademii Nauk, Tome 225 (1975) no. 1, pp. 15-17. http://geodesic.mathdoc.fr/item/DAN_1975_225_1_a1/