@article{DAN_1963_150_5_a13,
     author = {N. I. Shkil'},
     title = {An asymptotic solution of a system of linear differential equations containing a parameter},
     journal = {Doklady Akademii Nauk},
     pages = {1005--1008},
     publisher = {mathdoc},
     volume = {150},
     number = {5},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_150_5_a13/}
}