@article{DE_1978_14_4_a3,
     author = {N. N. Kushkov},
     title = {The boundedness of the solutions of a certain multidimensional system in the critical case of one zero root and two pure imaginary {roots.~I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {613--623},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_4_a3/}
}