@article{TMF_1982_51_1_a6,
     author = {V. N. Popov and S. A. Fedotov},
     title = {Behavior of the partition function of {Dicke} type models in the limit of a~large number of atoms},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {73--85},
     publisher = {mathdoc},
     volume = {51},
     number = {1},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1982_51_1_a6/}
}