@article{DE_2001_37_9_a20,
     author = {Zhou Jinxin},
     title = {Bounded and {Periodic} {Solutions} of {Nonlinear} {Differential} {Systems}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1289--1291},
     publisher = {mathdoc},
     volume = {37},
     number = {9},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2001_37_9_a20/}
}