@article{TMF_1991_88_1_a17,
     author = {V. B. Bobrov},
     title = {Exact relation for photon distribution function in a~medium in the long-wavelength limit},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {141--145},
     publisher = {mathdoc},
     volume = {88},
     number = {1},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1991_88_1_a17/}
}