@article{TMF_1980_44_3_a6,
     author = {N. N. Bogolyubov (Jr.) and V. I. Vozyakov and V. N. Plechko},
     title = {Many-boson averages for model systems of~the {Dicke} type},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {363--372},
     publisher = {mathdoc},
     volume = {44},
     number = {3},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1980_44_3_a6/}
}