@article{RM_1995_50_2_a5,
     author = {M. B. Sevryuk},
     title = {Some problems of the {KAM-theory:} conditionally-periodic motions in typical systems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {341--353},
     publisher = {mathdoc},
     volume = {50},
     number = {2},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1995_50_2_a5/}
}