@article{TMF_2011_169_3_a5,
     author = {Shunlong Luo and Nan Li and Shuangshuang Fu},
     title = {Quantumness of quantum ensembles},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {413--430},
     publisher = {mathdoc},
     volume = {169},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2011_169_3_a5/}
}