1. 1) Tippett, Patricia, Noades, Jean, Sanger, Ruth, Race, R. R., Sausais, Laima, Holman, C. A., and Buttimer, R. J.: Further studies of the I antigen and antibody. Vox Sang., 5, 107 (1960).
2. 2) Jenkins, W. J., and Marsh, W. L.: Unpublished observations cited by Race, R. R., and Sanger, Ruth in Blood Groups in Man, 5th ed. (1968).
3. 3) Wiener, A. S., Unger, L. J., Cohen, L., and Feldman, J.: Type-specific autoantibodies as a cause of acquired hemolytic anemia and hemolytic transfusion reactions: biologic test with bovine red cells. Ann. intern. Med., 44, 221 (1956).
4. 4) Marsh, W. L., and Jenkins, W. J.: Anti-i: a new cold antibody. Nature, 188, 753 (1960), cited by Mollison, P. L. in Blood Transfusion in Clinical Medicine, 4th ed. (1967).
5. 5) Mollison, P. L.: Blood Transfusion in Clinical Medicine, 4th ed. Blackwell Scientific Publications (Oxford and Edinburgh) (1967).