1. Diacetyl reductase of Lactobacillus casei;Branen;Can. J. Microbiol.,1970
2. Bergey's manual of determinative bacteriology;Buchanan,1974
3. Chou, T. C. 1962. The chemical nature of the characteristic flavor of cultured buttermilk. Ph.D. dissertation, Ohio State Univ., Columbus.
4. Citrate utilization in milk by Leuconostoc cremoris and Streptococcus diacetilactis;Cogan;J. Dairy Sci.,1975
5. Manual for the identification of medical bacteria;Cowan,1966