@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/}
}