1. See, e.g., , and , Ed., Physics and Chemistry of the Organic Solid State, Interscience Publishers, New York (N.Y.) 1965.
2. and , in: Photophysiology - Current Topics, Vol. 3, Ed. Academic Press, Inc., New York (N.Y.) 1968 (p. 225).
3. See, e.g., and , Ed., Proc. NATO Advanced Study Institute on Photobiology, Badin Fieolana 1972, Elsevier Publ. Co., Amsterdam 1973.
4. Effect of Magnetic Field on the Fluorescence of Tetracene Crystals: Exciton Fission