%0 Journal Article %A Haken, H. %A Reineker, P. %T The coupled coherent and incoherent exciton motion and its influence on optical absorption, electron spin resonance and nuclear spin resonance %J Acta Universitatis Carolinae. Mathematica et Physica %D 1973 %P 23-47 %V 14 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AUCMP_1973__14_1_a4/ %G en %F AUCMP_1973__14_1_a4