@article{IM2_2007_71_1_a8,
     author = {M. E. Shirokov},
     title = {Entropy characteristics of subsets of states. {II}},
     journal = {Izvestiya. Mathematics },
     pages = {181--218},
     publisher = {mathdoc},
     volume = {71},
     number = {1},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2007_71_1_a8/}
}