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2. Cultivation of anaerobic intestinal bacteria;Drasar, B.S.;J. Path. Bact,1967
3. Studies on the intestinal flora, Part II, Bacterial flora of the small intestine in patients with gastrointestinal disorders;Drasar, B.S.; Shiner, M.;Gut,1969
4. Intestinal microflora;Gorbach, S.L.;Gastroenterology,1971
5. Studies of intestinal microflora. II. Microorganisms of the small intestine and their relation to oral and fecal flora;Gorbach, S.L.; Plaut, A.G.; Nahas, L.; Sparknebel, G.; Weinstein, L.; Levitan, R.;Gastroenterology,1967