@article{TMF_1994_100_1_a4,
     author = {G. I. Kalmykov},
     title = {On the density in the grand canonical ensemble},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {44--58},
     publisher = {mathdoc},
     volume = {100},
     number = {1},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1994_100_1_a4/}
}