1. P. A. Inkerman, Abstracts of Papers, The 17th Congress of Int. Soc. Sugar Cane Technol., 1980, in press.
2. K. Arima, T. Beppu, M. Yokoyama, T. Aoki and T. Hino, Abstracts of Papers, The 46th Annual Meeting of Agric. Chem. Soc. Japan, 1971, p. 261.