1. M. J. Kuo and P. A. Hartman, J. Bacterial. 92, 723 (1966).
2. M. J. Kuo and P. A. Hartman, Can. J. Microbiol. 13, 1157 (1967).
3. M. Abdullah and D. French, Arch. Biochem. Biophys. 137, 483 (1970).
4. Y. Sakano, N. Masuda and T. Kobayashi, Agric. Biol Chem. 35, 971 (1971).
5. J. Robyt, Ph. D. Dissertation, Iowa State University, 1962.