1. Jangalgi, N. R. (1983),Chem. Abstr. 98(14), 109,117t.
2. Dale, B. E. and Moreira, M. J. (1982),Biotechnol. Bioeng. Symp. 12, 31–43.
3. Han, Y. W. (1978),Adv. Appl. Microbiol. 23, 119.
4. Wang, P. Y., Bolker, H. I., and Purves, C. B. (1967),Tappi 50, 123,124.
5. Lewin, M. and Roldan, L. G. (1971),J. Poly. Sci. 36, 213.