@article{DAN_1979_246_3_a20,
     author = {B. G. Granadchikova and L. V. Nikol'skaya and M. I. Samoilovich},
     title = {On the color nature of natural and synthetic sapphires and an express method of their identification},
     journal = {Doklady Akademii Nauk},
     pages = {599--601},
     publisher = {mathdoc},
     volume = {246},
     number = {3},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_246_3_a20/}
}