@article{DE_2006_42_8_a6,
     author = {D. V. Kornienko},
     title = {On the spectrum of the {Dirichlet} problem for systems of operator-differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1063--1071},
     publisher = {mathdoc},
     volume = {42},
     number = {8},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2006_42_8_a6/}
}