@article{DAN_1967_174_4_a16,
     author = {N. N. Sirota and T. D. Sokolovskii},
     title = {Vibration frequency spectrum of the silicon lattice},
     journal = {Doklady Akademii Nauk},
     pages = {797--799},
     year = {1967},
     volume = {174},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_174_4_a16/}
}