@article{DE_1969_5_9_a3,
     author = {S. T. Zavalishchin},
     title = {The locally integrable periodic motions of a nonlinear transmission system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1575--1582},
     publisher = {mathdoc},
     volume = {5},
     number = {9},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_9_a3/}
}