@article{TMF_1976_27_3_a8,
     author = {K. S. Matviichuk},
     title = {Method of $m$-particle density matrices of the canonical ensemble in the description of states of quantum systems},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {360--372},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1976_27_3_a8/}
}