1. Baird-Parker, A. C. (1962). J. appl. Bact., 25 352.
2. Baird-Parker, A. C. (1963). J. gen. Microbiol., 30, 409.
3. Baird-Parker, A. C. (1965). Ibid., 38, 363.
4. Baird-Parker, A. C. (1966). In Identification Methods for Microbiologists, edited by B. M. Gibbs and D. A. Shapton, Part A. Academic Press, London.
5. Barber, M., and Kuper, S. W. A. (1951). J. Path. Bact., 63, 65.