1. W C. Boyd:Tabulæ Biologicæ, vol. 17, part 2, p. 113, 1939.
2. De la Riviére et N. Kossovitch:Les groupes sanguins, Paris, 1936.
3. L. Hirszfeld:Ergebn. der Hyg., vol. 15, p. 54, 1934;Les groupes sanguins, Paris, 1938.
4. L. Lattes:The Individuality of the Blood, London, 1932. (Italian edition: Milan, 1934.)
5. D. Matta:A critical investigation of the blood groups and their medicolegal application, Cairo, 1937.