@article{DAN_1964_158_2_a18,
     author = {N. K. Bel'skii and D. A. Muhamedova},
     title = {The shape of absorption and dispersion curves of ruby $R$-lines},
     journal = {Doklady Akademii Nauk},
     pages = {317--320},
     publisher = {mathdoc},
     volume = {158},
     number = {2},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_158_2_a18/}
}