@article{AIHPA_1987__47_4_367_0,
     author = {Amrein, W. O. and Cibils, M. B. and Sinha, K. B.},
     title = {Configuration space properties of the {S-matrix} and time delay in potential scattering},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {367--382},
     publisher = {Gauthier-Villars},
     volume = {47},
     number = {4},
     year = {1987},
     mrnumber = {933683},
     zbl = {0657.35101},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1987__47_4_367_0/}
}