@article{IVM_1976_5_a11,
     author = {S. Kh. Aranson and E. V. Zhuzhoma},
     title = {The topological classification of singular dynamical systems on the torus},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {104--107},
     year = {1976},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1976_5_a11/}
}