@article{DE_2000_36_1_a14,
     author = {A. M. Samoilenko and A. A. Burilko and I. N. Grod},
     title = {Moduli of continuity of the derivatives of invariant tori for linear extensions of dynamical systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {103--113},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_1_a14/}
}