1. Aiba, S., Humphrey, A.E., and Millis, N.F., 1973, “Biochemical Engineering”, 2nd ed., Academic Press, New York.
2. Bender, D.F., 1985, “Amino Acid Metabolism”, 2nd ed., John Wiley and Sons, New York.
3. Beyeler, W., Einsele, A., and Fiechter, A., 1981. European J. Appl. Microbiol. Biotechnol.13: 10–14.
4. Duysens, L.N.M., and Amesz, J., 1957, Biochim. Biphys. Acta.24:19–26.
5. Harrison, D.E.F., 1970. J. Cell Biol.45:514–521.