1. Reynolds, D. N., Schatz, A., and Waksman, S. A., Proc. Soc. Exp. Biol. and Med., 64, 50 (1947).
2. Gause, G. F., and Brazhnikova, M. G., Nov. Med. (Moscow), 23, 3 (1951).
3. Bickel, H., Gaeumann, E., Keller-Schierlein, W., Prelog, V., Vischer, E., Wettstein, A., Zaehner, H., Experientia, 16, (4) 128 (1960).
4. Haskell, T. H., and Bunge, R. H., J. Antibiot., Ser. A, 16 (2) 67 (1963).
5. Tsukiura, H., Okanishi, M., Ohmori, T., Koshiyama, H., Miyaki, T., Kitazima, H., Kawaguchi, H., J. Antib. (Japan), 17, 40 (1964).