@article{DE_1994_30_6_a6,
     author = {A. V. Kurkina},
     title = {The {Riesz} basis property of root vector functions of the {Schr\"odinger} operator with matrix potential and a matrix spectral parameter},
     journal = {Differencialʹnye uravneni\^a},
     pages = {972--986},
     publisher = {mathdoc},
     volume = {30},
     number = {6},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_6_a6/}
}