6Seifert H S H, Gessler F. Continuous oral appilcation of probiotic B. cereus: An attemative to the prevention of ententoxaemia DTW (Deutsche Tieraerztliche Wochenschrift), 1996,103:386 - 389.
7Mamm Mario J. Probiotics in hedth and medicine: Moving from fashion to scientific validity. Clinical Microbiology Newsletter, 1997, 19:89-93.