An example of a planar group whose quasicomponent does not coincide with its component
Matematičeskie zametki, Tome 38 (1985) no. 4, pp. 517-522.

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     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/}
}
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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/