1. J. E. Hodge and B. T. Hofreiter, in “Methods in Carbohydrate Chemistry.” Vol. 1, ed. by R. L. Whistler and M. L. Wolfrom, Academic Press Inc., New York, 1962. pp. 380–394.
2. T. Sakai, in “Microbial Degradation of Natural Products.” ed. by G. Winkelmann, VCH Publishers, Inc., New York, 1992, pp. 57–81.