@article{DAN_1977_235_4_a15,
     author = {A. G. Nikogosyan},
     title = {The problem of diffusion reflection in the redistribution of radiation according to frequencies and directions},
     journal = {Doklady Akademii Nauk},
     pages = {786--789},
     publisher = {mathdoc},
     volume = {235},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_235_4_a15/}
}