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@article{MZM_1985_38_4_a3, author = {M. I. Ursul}, title = {An example of a planar group whose quasicomponent does not coincide with its component}, journal = {Matemati\v{c}eskie zametki}, pages = {517--522}, publisher = {mathdoc}, volume = {38}, number = {4}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1985_38_4_a3/} }
M. I. Ursul. An example of a planar group whose quasicomponent does not coincide with its component. Matematičeskie zametki, Tome 38 (1985) no. 4, pp. 517-522. http://geodesic.mathdoc.fr/item/MZM_1985_38_4_a3/