1. M. Pope, C.S. Swenberg, Electronic Processes in Organic Crystals and Polymers, 2nd edn. (Oxford University Press, New York, 1999)
2. J.A. Barltrop, J.D. Coyle, Excited States in Organic Chemistry (Wiley-VCH, New York, 1975)
3. M.V. der Auweraer, Photophysics and photochemistry of molecular materials, B-KUL-G0I12A
4. C.W. Tang, S.A. VanSlyke, Organic electroluminescent diodes. Appl. Phys. Lett. 51(12), 913–915 (1987)
5. J.H. Burroughes, D.D. Bradley, A.R. Brown, R.N. Marks, K. Mackay, R.H. Friend, P.L. Burnst, A.B. Holmes, Light-emitting diodes based on conjugated polymers. Nature 347, 539 (1990)