@article{MS2_1985__57_166952,
     author = {Niels Juul Munch},
     title = {Relatively 'closable' states on {C*-algebras.}},
     journal = {Mathematica Scandinavica},
     pages = {236--248},
     publisher = {mathdoc},
     volume = {57},
     year = {1985},
     zbl = {0575.46050},
     url = {http://geodesic.mathdoc.fr/item/MS2_1985__57_166952/}
}