1. The Porphyrins, Academic Press, New York, 1978 –1979, vol. 1–7.
2. , , The Porphyrin Handbook, Academic Press, New York, 2000 , vol. 1–10, 2003 , vol. 11–20.
3. Chemistry of Chlorophylls: Modifications, in: , Chlorophylls, CRC Press, Boca Raton, 1991 , p. 145.
4. Vitamin B12, Wiley, New York, 1982 , vol. I and II.
5. , , Vitamin B12 and B12-Proteins, Wiley-VCH, Weinheim, 1998 .