@article{DAN_1986_289_5_a15,
     author = {V. M. Vainberg and V. S. Popov},
     title = {Summation of perturbation series and the classical mechanics},
     journal = {Doklady Akademii Nauk},
     pages = {1095--1099},
     publisher = {mathdoc},
     volume = {289},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_289_5_a15/}
}