1. J. E. Falk and K. M.Smith, Porphyrins and Metalloporphyrins, Elsevier, Amsterdam, 1975
2. D. Dolphin , The Porphyrins, Academic, New York, 1979
3. B. Grimm , R. J.Porra, W.Ruediger and H.Scheer, Chlorophylls and Bacteriochlorophylls: Biochemistry, Biophysics, Functions and Applications, Springer, Dordrecht, 2006
4. N. B. McKeown , Phthalocyanine Materials: Synthesis, Structure and Function, Cambridge University Press, Cambridge, 1998