@article{DE_1979_15_3_a18,
     author = {B. F. Ivanov},
     title = {On the question of the existence of closed trajectories in the neighborhood of a homoclinic curve},
     journal = {Differencialʹnye uravneni\^a},
     pages = {548--550},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_3_a18/}
}