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@article{MZM_2004_75_4_a3, author = {Ya. B. Vorobets}, title = {Actions of {Finitely} {Generated} {Groups} and {Semigroups} on a {Plane} by {Means} of {Isometries}}, journal = {Matemati\v{c}eskie zametki}, pages = {523--548}, publisher = {mathdoc}, volume = {75}, number = {4}, year = {2004}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_2004_75_4_a3/} }
Ya. B. Vorobets. Actions of Finitely Generated Groups and Semigroups on a Plane by Means of Isometries. Matematičeskie zametki, Tome 75 (2004) no. 4, pp. 523-548. http://geodesic.mathdoc.fr/item/MZM_2004_75_4_a3/