@article{DE_1986_22_6_a28,
     author = {S. K. Norkin},
     title = {On the asymptotics and structure of the integral $O$-set of a singular system. {II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1086--1089},
     publisher = {mathdoc},
     volume = {22},
     number = {6},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_6_a28/}
}