@article{TMF_2003_136_1_a9,
     author = {M. Corgini and D. P. Sankovich},
     title = {Two-Sided {Estimates} for the {Internal} {Energy} of {Thermal} {Photons}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {158--163},
     publisher = {mathdoc},
     volume = {136},
     number = {1},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2003_136_1_a9/}
}