1. Abo-Elnaga, I. G., and O. Kandler. 1965 Zur Taxonomie der Gattung Lactobacillus Beijerinck. I: Das Subgenus Streptobacterium Orla Jensen Zentralbl. Bakteriol. Parasitenkde. Infektionskrankh. Hyg. Abt. 2 119 1–36
2. Accolas, J.-P., and H. Spillmann. 1979 The morphology of six bacteriophages of Streptococcus thermophilus J. Appl. Bacteriol. 47 135–144
3. Ackermann, H.-W., and M. S. DuBow. 1987 Bacteriophage taxonomy In: Viruses of Prokaryotes CRC Press Boca Raton, FL 1 13–28
4. Adlerberth, I. 1999 Establishment of a normal intestinal microflora in the newborn infant In: L. A. Hanson and R. H. Yolken (Eds.) Nestlé Nutrition Workshop Series Vevey/Lippincott-Raven Publishers Philadelphia, PA 42 63–78
5. Aguirre, M., and M. D. Collins. 1993 Lactic acid bacteria and human clinical infection J. Appl. Bacteriol. 75 95–107