1. Ceulemans AJ (2013) Group theory applied to chemistry. Springer, Dordrecht
2. Fischer G (1984) Vibronic coupling: the interaction between the electronic and nuclear motions. Academic Press, London
3. Bersuker I, Polinger V (1989) Vibronic interactions in molecules and crystals. Springer, Berlin
4. Azumi T, Matsuzaki K (1977) Photochem Photobiol 25(3):315
5. Sato T, Tokunaga K, Iwahara N, Shizu K, Tanaka K (2009) In: Köppel H, Yarkony DR, Barentzen H (eds) The Jahn–Teller effect: fundamentals and implications for physics and chemistry, Springer series in chemical physics, vol 97. Springer, Berlin