1. BROOKS, M. E. AND EPPS, H. B. G. (1959) : Taxonomic studies of the genus Clostridium: Clostridium bifermentans and C. sordellii. J. Gen. Microbiol., 21, 144-155.
2. DARLING, C. A. AND SIPLE, P. A. (1941) : Bacteria of Antarctica. J. Bacteriol., 42, 83-98.
3. DUNCAN, C. L. AND STRONG, D. H. (1968) : Improved medium for sporulation of Clostridium perfringens. Appl. Microbiol., 16, 82-87.
4. EKLEÖF, E. (1908) : Bakteriologishe Studien während der schwedischen Südpolar-Expedition. Wiss. Ergeb. schwed. Südpolar-Exped. 1901-1903, Stockholm, 7, 120-122.
5. GOTO, S., SUGIYAMA, J. AND IIZUKA, H. (1969) : A taxonomic study of Antarctic yeasts. Mycologia, 61, 748-774.