@article{DE_1980_16_3_a7,
     author = {S. G. Simonyan and L. A. Bagdasaryan},
     title = {Zones of instability of a one-dimensional periodic {Dirac} system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {449--453},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_3_a7/}
}