@article{DAN_1987_295_1_a8,
     author = {A. I. Neishtadt},
     title = {Jumps of the adiabatic invariant on crossing the separatrix, and the origin of the {Kirkwood} gap $3:1$},
     journal = {Doklady Akademii Nauk},
     pages = {47--50},
     publisher = {mathdoc},
     volume = {295},
     number = {1},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_295_1_a8/}
}