@article{DE_1966_2_6_a11,
     author = {N. A. Aliev},
     title = {Expansions of matrix-functions in solutions of a spectral problem},
     journal = {Differencialʹnye uravneni\^a},
     pages = {847--852},
     publisher = {mathdoc},
     volume = {2},
     number = {6},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1966_2_6_a11/}
}