no. 2
Odd anharmonic oscillators and shape resonances
Annales de l'I.H.P. Physique théorique, Tome 38 (1983) no. 2, pp. 175-186 
@article{AIHPA_1983__38_2_175_0,
     author = {Caliceti, E. and Maioli, M.},
     title = {Odd anharmonic oscillators and shape resonances},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {175--186},
     year = {1983},
     publisher = {Gauthier-Villars},
     volume = {38},
     number = {2},
     mrnumber = {705339},
     zbl = {0521.47009},
     language = {en},
     url = {https://www.numdam.org/item/AIHPA_1983__38_2_175_0/}
}
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Caliceti, E.; Maioli, M. Odd anharmonic oscillators and shape resonances. Annales de l'I.H.P. Physique théorique, Tome 38 (1983) no. 2, pp. 175-186. https://www.numdam.org/item/AIHPA_1983__38_2_175_0/

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