@article{DAN_1965_165_4_a12,
     author = {M. V. Fedoryuk},
     title = {The asymptotic behavior of solutions of ordinary linear differential equations of order~$n$},
     journal = {Doklady Akademii Nauk},
     pages = {777--779},
     publisher = {mathdoc},
     volume = {165},
     number = {4},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_165_4_a12/}
}