@article{INTF_1986_13_a1,
     author = {M. V. Fedoryuk},
     title = {Asymptotic methods in analysis},
     journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Fundamental'nye Napravleniya},
     pages = {93--210},
     year = {1986},
     volume = {13},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTF_1986_13_a1/}
}