@article{ND_2016_12_2_a8,
     author = {M. B. Sevryuk},
     title = {On the history of {KAM} theory},
     journal = {Russian journal of nonlinear dynamics},
     pages = {289--293},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2016_12_2_a8/}
}