@article{SM_2004_195_3_a1,
     author = {A. V. Kochergin},
     title = {Non-degenerate fixed points and mixing in~flows on {a~2-torus.~II}},
     journal = {Sbornik. Mathematics},
     pages = {317--346},
     year = {2004},
     volume = {195},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2004_195_3_a1/}
}