@article{VMUMM_1988_2_a8,
     author = {S. A. Dovbysh},
     title = {Kolmogorov tori in some nonintegrable systems that do not contain a small parameter},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {36--39},
     publisher = {mathdoc},
     number = {2},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1988_2_a8/}
}