1. (a) The enantiopure drug market has been estimated as US $18 billion worldwide. See: Stinson, S. C. Chem. Eng. News 1992, September 28, 46–78;
2. (b) Sheldon, R. A. Chirotechnology; Marcel Dekker: New York, 1993;
3. (c) Collins, A. N.; Sheldrake, G. N.; Crosby, J. (Eds), Chirality in Industry; Wiley: Chichester, Vol. I, 1992; Vol. II, 1997;
4. (d) Stinson, S. C. Chem. Eng. News 1998, 76, 83–104.
5. Faber, K. Biotransformations in Organic Chemistry, 3rd Edn; Springer: Heidelberg, 1997.