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@article{CHEB_2002_3_1_a9, author = {Yu. A. Ignatov and A. V. Evtikhova}, title = {Free groups of linear-fractional transformations}, journal = {\v{C}eby\v{s}evskij sbornik}, pages = {78--81}, publisher = {mathdoc}, volume = {3}, number = {1}, year = {2002}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/CHEB_2002_3_1_a9/} }
Yu. A. Ignatov; A. V. Evtikhova. Free groups of linear-fractional transformations. Čebyševskij sbornik, Tome 3 (2002) no. 1, pp. 78-81. http://geodesic.mathdoc.fr/item/CHEB_2002_3_1_a9/