@article{AIHPA_1974__21_3_233_0,
     author = {Chadan, K.},
     title = {Les propri\'et\'es de la fonction de {Jost} des potentiels coup\'es, et le probl\`eme inverse},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {233--244},
     publisher = {Gauthier-Villars},
     volume = {21},
     number = {3},
     year = {1974},
     mrnumber = {376011},
     language = {fr},
     url = {http://www.numdam.org/item/AIHPA_1974__21_3_233_0/}
}