@article{TMF_1970_4_2_a2,
     author = {V. N. Sushko and S. S. Horuzhy},
     title = {Vector states on algebras of observables and superselection rules {I.~Vector} states and {Hilbert} space},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {171--195},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1970_4_2_a2/}
}