1. Pickles, Nature, 158, 880 (1946).
2. Morton and Pickles, Nature, 159, 779 (1947).
3. Race and Sanger, “Blood Groups in Man”, 277 (Blackwell, Oxford).
4. Dausset and Vidal, C.R. Soc. Biol., 144, 679 (1950).
5. Wheeler, Luhby and Scholl, J. Immunol., 65, 39 (1950).