@article{DE_1985_21_3_a21,
     author = {V. A. Gustomesov},
     title = {Investigation of an impulse system with variable structure},
     journal = {Differencialʹnye uravneni\^a},
     pages = {523--525},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1985_21_3_a21/}
}