@article{IM2_1975_9_4_a6,
     author = {A. B. Krygin},
     title = {On $\omega$-limit sets of a~cylindrical cascade},
     journal = {Izvestiya. Mathematics},
     pages = {831--849},
     year = {1975},
     volume = {9},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1975_9_4_a6/}
}