@article{MZ_1994__215_1_174624,
     author = {L.J. Bunce and J. Hamhalter},
     title = {Jauch-Piron states on von {Neumann} algebras.},
     journal = {Mathematische Zeitschrift},
     pages = {491--502},
     publisher = {mathdoc},
     volume = {215},
     number = {1},
     year = {1994},
     zbl = {0791.46043},
     url = {http://geodesic.mathdoc.fr/item/MZ_1994__215_1_174624/}
}