@article{IM2_1975_9_5_a6,
     author = {V. A. Khatskevich},
     title = {On fixed points of generalized linear-fractional transformations},
     journal = {Izvestiya. Mathematics },
     pages = {1069--1079},
     publisher = {mathdoc},
     volume = {9},
     number = {5},
     year = {1975},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1975_9_5_a6/}
}