@article{AIHPA_1983__39_3_211_0,
     author = {Voros, A.},
     title = {The return of the quartic oscillator. {The} complex {WKB} method},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {211--338},
     publisher = {Gauthier-Villars},
     volume = {39},
     number = {3},
     year = {1983},
     mrnumber = {729194},
     zbl = {0526.34046},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1983__39_3_211_0/}
}