1. Kinoshita, S., Ukdaka, S., and Shimono, M. (1957),J. Gen. Appl. Microb. 3, 193.
2. Commercial Biotechnology, An International Analysis, January 1984, Congress of United States, Office of Technology Assessment.
3. Crueger, W. and Crueger, A. (1984),Biotechnology: A Textbook of Industrial Microbiology, Science Tech Inc., Madison, WI, pp. 127–147.
4. Clark, J. M., Jr. (1964),Experimental Biochemistry, W. H. Freeman, San Francisco, CA, p. 26.
5. Bidlingmeyer, B., Cohen, S., and Tarvih, T. (1984),J. Chromatog. 336, pp. 93–104.