@article{DAN_1961_139_4_a21,
     author = {S. V. Tyablikov and V. A. Moskalenko},
     title = {The method of quantum {Green} functions in the theory of optical bands in crystals},
     journal = {Doklady Akademii Nauk},
     pages = {851--854},
     publisher = {mathdoc},
     volume = {139},
     number = {4},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_4_a21/}
}