%0 Journal Article %A Czarnecki, Stefan %T Revue of experiments with multiple photon transitions in organic crystals %J Acta Universitatis Carolinae. Mathematica et Physica %D 1968 %P 29-43 %V 9 %N 2 %U http://geodesic.mathdoc.fr/item/AUCMP_1968_9_2_a4/ %G cs %F AUCMP_1968_9_2_a4