1. Ichimura, K.Photochromism: Molecules and Systems; Dürr, H.; Bouas-Laurent, H. Ed.; Elsevier: Amsterdam, 1990; p 903.
2. Ichimura, K.Photochromic and Thermochromic Compounds; Crano, J. C., Guglielmetti, R., Eds.; Kluwer Academic/Plenum Publishers: New York, 1999; Vol. 2, p 9.
3. Surface-assisted photoregulation of molecular assemblages as commander/soldier molecular systems
4. Vögtle, E.Supramolecular Chemistry; John Wiley & Sons: Chichester, 1991; p 231.
5. Introduction to Liquid Crystals