@article{TMF_1971_6_2_a0,
     author = {A. S. Holevo},
     title = {Quasifree states of~the~$C^*$~algebra {of~CCR.} {II}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {145--150},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1971_6_2_a0/}
}