1. Biophysical Chemistry. Bloomfield VA, Harrington RE (eds.). Freeman and Co., San Francisco (Readings from Scientific American), 1975, pp. 118–154.
2. The Enzymes, Vol. 1 and 2. Boyer PD (ed.). Academic Press, New York, 1970. Very extensive advanced text
3. Organic Chemistry of Life, Calvin M, Prior WA (eds.). Freeman and Co., San Francisco (Readings from Scientific American), 1973, Chapter 35. Neurath H: Protein digesting enzymes
4. Enzymes. Dixon M, Webb EC, Longman, London, 1971 Chapters 4, 8, 10 Classical advanced text
5. Enzyme Structure and Mechanism. Fersht A. WH Freeman and Co., San Francisco, 1977. Extremely useful text