1. Von Behring, E. and Kitasato, S. (1890). Ueber das Zustandekommen der Diptherie Immunitat und der Tetanus-Immunitat bei Thieren. Dtsch. Med Wschr., 16, 1113–15
2. Ehrlich, P. (1897). Die Wertbemessung des Diptherie-heilserums und deren theorestische grundlagen. Klin. Jahrbuch, 6, 299–326
3. White, B. (1938). The Biology of the Pneumococcus. The Common Wealth Fund, New York. (This volume has been reprinted by the Harvard University Press, 1979)
4. Lancefield, R. C. (1928). The antigenic complex of Streptococcus haemolyticus. II. Chemical and immunologic properties of the protein fractions. J. Exp. Med., 47, 469–80
5. Taylor, P. W. (1983). Bactericidal and bacteriolytic activity of serum against Gram-negative bacteria. Microbiol. Rev., 47, 46–83