1. L.V. Holdeman, W.E.C. Moore, Anaerobe Laboratory Manual, 3rd edn. ( VPI Anaerobe Laboratory, Blacksburg, Virginia, 1972 ).
2. B.S. Drasar, ‘Cultivation of Anaerobic Intestinal Bacteria’, J. Pathol Bacteriol, 94 (1967), pp. 417–427.
3. W.E.C. Moore, E.P. Cato, L.V. Holdeman, ‘Some Current Concepts in Intestinal Bacteriology’, Am. J. clin. Nutr., 31 (1978), pp. 533–542.
4. D.C. Savage, ‘Interactions Between the Host and its Microbes’ in R.T.J. Clark, T. Bauchop (eds.), Microbial Ecology of the Gut ( Academic Press, London, 1977 ), pp. 277–310.
5. J.P. Brown, ‘Role of Gut Bacterial Flora in Nutrition and Health: a Review of Recent Advances in Bacteriological Techniques, Metabolism and Factors Affecting Flora Composition’, Crit. Rev. Fd Sci. Nutr., 8 (1977), pp. 229–336.