1. Anjan, K., Jyotirmov, D., Vinay, C.V. (1980).J. Chem. Technol. Biotechnol. 30, 453?457.
2. Chinard, F.D. (1952).J. Biol. Chem. 199, 91.
3. Hadj Sassi, A., Queric, M.P., Deschamps, A.M. and Lebeault, J.M. (1988).Biotechnology Letters 10, 8, 583?586.
4. Nakayama, K. (1972). In:The microbial Production of Aminoacids, Editors: K. Yamada, S. Kinoshita, T. Tsunoda, T. Aida, Kodansha, Ltd Tokyo 369.
5. Nakayama, K., Araki, K. (1973). u.s. Patent 370 8395.