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@article{MZM_1985_38_4_a2, author = {I. G. Lysenok}, title = {A system of defining relations for a {Grigorchuk} group}, journal = {Matemati\v{c}eskie zametki}, pages = {503--516}, publisher = {mathdoc}, volume = {38}, number = {4}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1985_38_4_a2/} }
I. G. Lysenok. A system of defining relations for a Grigorchuk group. Matematičeskie zametki, Tome 38 (1985) no. 4, pp. 503-516. http://geodesic.mathdoc.fr/item/MZM_1985_38_4_a2/