@article{AIHPA_1987__47_4_429_0,
     author = {Werner, Reinhard},
     title = {Arrival time observables in quantum mechanics},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {429--449},
     publisher = {Gauthier-Villars},
     volume = {47},
     number = {4},
     year = {1987},
     mrnumber = {933685},
     zbl = {0649.46064},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1987__47_4_429_0/}
}