@article{DE_1979_15_10_a5,
     author = {D. I. Martynyuk and N. S. Tsyganovsky},
     title = {Invariant manifolds of systems with lag subjected to impulse action},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1783--1795},
     publisher = {mathdoc},
     volume = {15},
     number = {10},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_10_a5/}
}