@article{DE_1984_20_12_a6,
     author = {A. A. Stakun},
     title = {The resolvent of a singular differential operator with a turning point},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2066--2075},
     year = {1984},
     volume = {20},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_12_a6/}
}