@article{10_21136_CMJ_1984_101981,
     author = {Pt\'ak, Pavel},
     title = {Spaces of observables},
     journal = {Czechoslovak Mathematical Journal},
     pages = {552--561},
     publisher = {mathdoc},
     volume = {34},
     number = {4},
     year = {1984},
     doi = {10.21136/CMJ.1984.101981},
     mrnumber = {764437},
     zbl = {0572.28007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1984.101981/}
}