@article{FAA_2005_39_1_a2,
     author = {A. S. Gorodetski and Yu. S. Ilyashenko and V. A. Kleptsyn and M. B. Nalsky},
     title = {Nonremovable {Zero} {Lyapunov} {Exponents}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {27--38},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2005_39_1_a2/}
}