1. Germ-free life and gnotobiology;Luckey,1963
2. Lactobacillus acidophilus and its therapeutic application;Rettger,1935
3. Microbial biota of the human intestine: a tribute to some pioneering scientists;Savage;Curr Issues Intest Microbiol,2001
4. The rumen and its microbes;Hungate,1966
5. Roll-tube technique for anaerobic bacteria;Holdeman;Am J Clin Nutr,1972