@article{DAN_1961_141_1_a5,
     author = {A. M. Molchanov},
     title = {Stability in the case of a neutral linear approximation},
     journal = {Doklady Akademii Nauk},
     pages = {24--27},
     publisher = {mathdoc},
     volume = {141},
     number = {1},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_141_1_a5/}
}