1. Organic Photochromic and Thermochromic Compounds, C.Crano and R.Guglielmetti, eds, Vol 1, Plenum Press, New York, London, 1999, Vol 2, Kluwer Academic, Plenum Publishers, New York, Boston, Dordrecht, London, Moscow, 1999, and literature cited therein.
2. The Fischer Indole Synthesis.