1. S. B. Mathur, Phytopath. Z.62, 327 (1968).
2. Y. H. Chan and W. E. Sackston, Can. J. Bot.51, 696 (1973).
3. J. E. Hodge and B. T. Hofreiter, in: Methods in Carbohydrate Chemistry, vol. I, p. 386. Ed. R. L. Whistler and M. L. Wolfrom. Academic Press, New York 1962.
4. J. A. Sibley and A. L. Lehninger, J. biol. Chem.177, 859 (1949).
5. Y. Nosoh, in: Methods in Enzymology, vol. XLI, part B, p. 383. Ed. W. A. Wood. Academic Press, New York 1975.