“H-atom Transfers in B12 Enzymes” Banerjee R., Truhlar D. G., Dybała-Defratyka A., Paneth P. in “Handbook of Hydrogen Transfer” vol. 2, Klinman J., Schowen R. L. (Eds.) “Biological Aspects of Hydrogen Transfer” Wiley-VCH, Germany, 2006, Chapter 19, 1473-1495