1. 1) F. Jacob, Molecular Fluorescence (Ed. B. Valeur), WILEY-VCH, Weinheim, Chap. 10 (2002).
2. 2) H. Zollinger, Color Chemistry, WILEY-VCH, Weinheim, Chap. 13 (2003).
3. 3) K. Hunger, Industrial Dyes, WILEY-VCH, Weinheim, Chap. 6 (2003).
4. 4) J. Vercammen, G. Maertens, and Y. Engelborghs, Fluorescence of Supermolecules, Polymers and Nanosystems (Ed. M. N. Berberan-Santos), Springer, Berlin, p. 323 (2008).
5. 5) S. Yagi, Progress in the Science of Functional Dyes (Eds. Y. Ooyama and S. Yagi), Springer Nature, Singapore, Chap. 16 (2021).