@article{TMF_2016_186_2_a7,
     author = {T. H. Rasulov},
     title = {Branches of the~essential spectrum of the~lattice spin-boson model with at most two photons},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {293--310},
     publisher = {mathdoc},
     volume = {186},
     number = {2},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2016_186_2_a7/}
}