@article{AIHPA_1979__30_2_89_0,
     author = {Amrein, W. O. and Pearson, D. B.},
     title = {Commutators of {Hilbert-Schmidt} type and the scattering cross section},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {89--107},
     publisher = {Gauthier-Villars},
     volume = {30},
     number = {2},
     year = {1979},
     mrnumber = {535367},
     zbl = {0415.47005},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1979__30_2_89_0/}
}