Scheer, Hugo (2006). "An Overview of Chlorophylls and Bacteriochlorophylls: Biochemistry, Biophysics, Functions and Applications". Chlorophylls and Bacteriochlorophylls. Advances in Photosynthesis and Respiration. Vol. 25. pp. 1–26. doi:10.1007/1-4020-4516-6_1. ISBN978-1-4020-4515-8.