%0 Journal Article %A Yu. A. Klyuev %T An optical investigation of phase transitions under pressure %J Doklady Akademii Nauk %D 1962 %P 538-540 %V 144 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1962_144_3_a19/ %G ru %F DAN_1962_144_3_a19