@article{MZM_2000_67_6_a12,
     author = {O. M. Mateiko and O. I. Tavgen'},
     title = {Free products of cyclic subgroups in the group $PSL_2(\mathbb C)$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {922--930},
     publisher = {mathdoc},
     volume = {67},
     number = {6},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2000_67_6_a12/}
}