1. B. Van Gemert, in: J.C. Crano, R.J. Guglielmetti (Eds.), Organic Photochromic and Thermochromic Compounds, vol. 1, Plenum Press, New York, Chapter 3, 1998.
2. R.J. Guglielmetti, in: H. Durr, H. Bouas-Laurent (Eds.), Photochromism: Molecules and Systems, Elsevier, Amsterdam, 1990.
3. S. Anguille, P. Brun, R. Guglielmetti, Strokach, Y.P. Ignatin, V.A. Barachevsky, M.V. Alfimov, J. Chem. Soc., Perkin Trans 2 (2001) 639.
4. NEW FERROCENYL-NAPHTHOPYRANS WITH ORIGINAL PHOTOCHROMIC BEHAVIOUR
5. J.C. Micheau, in: J.C. Crano, R. Guglielmetti (Eds.), Organic Photochromic and Thermochromic Compounds, vol. 2, Plenum Press, New York, Chapter 3, 1999.