@article{DAN_1978_241_6_a2,
     author = {G. Ya. Lyubarskii},
     title = {On the theory of the {WKB} method. {The} case of a finite number of neighboring turning points},
     journal = {Doklady Akademii Nauk},
     pages = {1265--1268},
     publisher = {mathdoc},
     volume = {241},
     number = {6},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_241_6_a2/}
}