Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1976_19_3_a14, author = {A. V. Kochergin}, title = {Nonsingular saddle points and the absence of mixing}, journal = {Matemati\v{c}eskie zametki}, pages = {453--468}, publisher = {mathdoc}, volume = {19}, number = {3}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1976_19_3_a14/} }
A. V. Kochergin. Nonsingular saddle points and the absence of mixing. Matematičeskie zametki, Tome 19 (1976) no. 3, pp. 453-468. http://geodesic.mathdoc.fr/item/MZM_1976_19_3_a14/