1. (a) D.P. Mobley, Plastics From Microbes, Hanser/Gardner, Cincinnati, 1994.
2. (b) C. Viney, S.T. Case, J.H. Waite, Biomolecular Materials, Mater. Res. Soc. Proc. 292 (1992).
3. (c) D. Kaplan, W.W. Adams, B. Farmer, C. Viney, Silk Polymers, ACS Symposium Series 544, 1994.
4. (a) H.R. Kricheldorf, α-Aminoacid-N-Carboxyanhydrides and Related Materials, Springer-Verlag, New York, 1987.
5. (b) H.R. Kricheldorf, in: S. Penczek (Ed.), Models of Biopolymers by Ring-Opening Polymerization, CRC Press, Boca Raton, 1990.