%0 Journal Article %A Yu. I. Kozlov %A D. N. Shigorin %T Two-quantum photochemical processes in frozen solutions of triphenylmethane compounds %J Doklady Akademii Nauk %D 1965 %P 871-874 %V 161 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_161_4_a35/ %G ru %F DAN_1965_161_4_a35