1. N.S. Sariciftci (Ed.), The Nature of Photoexcitations in Conjugated Polymers, World Scientific, Singapore, 1997.
2. M. Pope, C.E. Swenberg, Electronic Processes in Organic Crystals, Oxford University Press, New York, 1982.
3. R.C. Enck, G. Pfister, in: J. Mort, D.M. Pai (Eds.), Photoconductivity and Related Phenomena, Elsevier, New York, 1976.
4. Theory of geminate recombination on a lattice
5. Analysis of the photocurrent action spectra of MEH-PPV polymer photodiodes