1. Schild, G. C., Oxford, J. S., Virelizier, J. L.: Immunity to Influenza. International Symposium on immunity to Infections of the Respiratory System in Man and Animals, London 1974. Development in Biological Standardization28, 253?272 (1975).
2. Schild, G. C., Pereira, M. S., Chakraverty, P.: Single radial-haemolysis. A new method for the assay of antibody to influenza haemagglutinin. Bull. W.H.O.52, 43?50 (1975).
3. Russell, S. M., McCahon, D., Beare, A. S.: A single radial-haemolysis technique for the measurement of influenza antibody. J. gen. Virol.27, 1?10 (1975).
4. Skaug, K., Orstavik, K., Ulstrip, J. C.: Application of the passive haemolysis test for the determination of rubella virus antibodies. Acta Pathol. Microbiol. Scand. Sect. B.83, 367?372 (1975).
5. Strannegard, O., Grillner, L., Lindberg, I.-M.: Haemolysis-in-gel for the demonstration of antibodies to rubella virus. J. clin. Microbiol.1, 494 (1975).