TY - JOUR AU - Czarnecki, Stefan TI - Revue of experiments with multiple photon transitions in organic crystals JO - Acta Universitatis Carolinae. Mathematica et Physica PY - 1968 SP - 29 EP - 43 VL - 9 IS - 2 UR - http://geodesic.mathdoc.fr/item/AUCMP_1968_9_2_a4/ LA - cs ID - AUCMP_1968_9_2_a4 ER -