@article{AIHPA_1974__20_3_291_0,
     author = {Fannes, M. and Verbeure, A. and Weder, R.},
     title = {On momentum states in quantum mechanics},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {291--296},
     publisher = {Gauthier-Villars},
     volume = {20},
     number = {3},
     year = {1974},
     mrnumber = {391782},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1974__20_3_291_0/}
}