@article{AIHPA_1994__61_3_347_0,
     author = {Colin de Verdi\`ere, Yves and Parisse, Bernard},
     title = {\'Equilibre instable en r\'egime semi-classique. {II.} {Conditions} de {Bohr-Sommerfeld}},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {347--367},
     publisher = {Gauthier-Villars},
     volume = {61},
     number = {3},
     year = {1994},
     mrnumber = {1311072},
     zbl = {0845.35076},
     language = {fr},
     url = {http://www.numdam.org/item/AIHPA_1994__61_3_347_0/}
}