%0 Journal Article %A N. K. Bel'skii %A D. A. Muhamedova %T The shape of absorption and dispersion curves of ruby $R$-lines %J Doklady Akademii Nauk %D 1964 %P 317-320 %V 158 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_158_2_a18/ %G ru %F DAN_1964_158_2_a18