@article{FPM_2012_17_6_a4,
     author = {T. V. Rybalkina and V. V. Sergeichuk},
     title = {Topological classification of {M\"obius} transformations},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {175--183},
     year = {2012},
     volume = {17},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2012_17_6_a4/}
}