@article{DAN_1991_321_5_a16,
     author = {B. N. Devyatov and N. A. Rubtsov and V. P. Solov'ev},
     title = {A general method for the analytic investigation of nonlinear},
     journal = {Doklady Akademii Nauk},
     pages = {951--957},
     publisher = {mathdoc},
     volume = {321},
     number = {5},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_321_5_a16/}
}