@article{DAN_1994_337_2_a11,
     author = {I. V. Andrianov},
     title = {Sequential construction of asymptotic solutions in essentially nonlinear systems},
     journal = {Doklady Akademii Nauk},
     pages = {194--195},
     publisher = {mathdoc},
     volume = {337},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_337_2_a11/}
}