@article{DAN_1991_316_4_a15,
     author = {S. V. Emel'yanov and P. V. Zhivoglyadov and S. K. Korovin and S. V. Nikitin},
     title = {The principle of recurrent stability of perturbations in the},
     journal = {Doklady Akademii Nauk},
     pages = {834--838},
     publisher = {mathdoc},
     volume = {316},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_316_4_a15/}
}