@article{DE_1980_16_11_a19,
     author = {V. V. Amel'kin},
     title = {Superharmonic oscillations of totally integrable linear systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2089--2091},
     publisher = {mathdoc},
     volume = {16},
     number = {11},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_11_a19/}
}