@article{RM_1997_52_3_a2,
     author = {L. D. Pustyl'nikov},
     title = {Infinite-dimensional non-linear ordinary differential equations and the {KAM} theory},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {551--604},
     publisher = {mathdoc},
     volume = {52},
     number = {3},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1997_52_3_a2/}
}