@article{AIHPA_1980__33_2_209_0,
     author = {Jensen, Arne},
     title = {Resonances in an abstract analytic scattering theory},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {209--223},
     publisher = {Gauthier-Villars},
     volume = {33},
     number = {2},
     year = {1980},
     mrnumber = {605196},
     zbl = {0462.47010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AIHPA_1980__33_2_209_0/}
}