On momentum states in quantum mechanics
Annales de l'I.H.P. Physique théorique, Volume 20 (1974) no. 3, p. 291-296
@article{AIHPA_1974__20_3_291_0,
     author = {Fannes, M. and Verbeure, A. and Weder, Ricardo A.},
     title = {On momentum states in quantum mechanics},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     publisher = {Gauthier-Villars},
     volume = {20},
     number = {3},
     year = {1974},
     pages = {291-296},
     mrnumber = {391782},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1974__20_3_291_0}
}
Fannes, M.; Verbeure, A.; Weder, R. On momentum states in quantum mechanics. Annales de l'I.H.P. Physique théorique, Volume 20 (1974) no. 3, pp. 291-296. http://www.numdam.org/item/AIHPA_1974__20_3_291_0/

[1] J. Manuceau, M. Sirugue, D. Testard, A. Verbeure, The smallest C*-algebra for canonical commutation Relations; preprint Marseille 71/p. 397: Comm. Math. Phys., t. 32, 1973, p. 231. | MR 339715 | Zbl 0284.46039

[2] J. Von Neumann, Math. Ann., t. 104, 1931, p. 570. | JFM 57.1446.01 | Zbl 0001.24703

[3] M. Sirugue, Improper States of canonical commutation Relations for a finite number of degrees of freedom; Marseille preprint 71/p. 412.