@article{DE_1977_13_9_a3,
     author = {N. A. Izobov},
     title = {The absence of real multipliers for an $n$-dimensional periodic system of order $4m+2$},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1581--1587},
     publisher = {mathdoc},
     volume = {13},
     number = {9},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_9_a3/}
}