@article{DE_1984_20_6_a24,
     author = {N. S. Sahakyan},
     title = {Asymptotic expansions with respect to the spectral parameter of solutions of linear differential equations in the case of roots of the characteristic equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1095--1097},
     publisher = {mathdoc},
     volume = {20},
     number = {6},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_6_a24/}
}