@article{DE_1968_4_8_a8,
     author = {A. F. Kleimenov},
     title = {The existence and stability of periodic solutions of systems with lag which are close to a {Ljapunov} system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1433--1440},
     publisher = {mathdoc},
     volume = {4},
     number = {8},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_8_a8/}
}