@article{DE_1970_6_9_a5,
     author = {E. I. Gerashchenko and V. A. Gustomesov},
     title = {An analysis of a discrete relay system on the phase plane},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1587--1598},
     publisher = {mathdoc},
     volume = {6},
     number = {9},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_9_a5/}
}