1. T.C. Bruice, S.J. Benkovic, Bioorganic Mechanism, vol. 1, Benjamin, New York, 1966.
2. W.P. Jencks, Catalysis in Chemistry and Enzymology, Mcgraw-Hill, New York, 1966.
3. M.L. Bender, Mechanism of Homogeneous Catalysis from Protons to Proteins, Wiley-Interscience, New York, 1971.
4. J.E. Coleman, in: E.T. Kaiser, F.J. Kezdy (Eds.), Progress in Bioorganic chemistry, vol. 1, Wiley-Interscience, New York, 1971, 159.