1. Genevoix, M., Traité de Chimie Biologique (Presses Universitaires de France, Paris, 1957).
2. Howe, Eugene E., Chem. Eng. News, 74 (July 23, 1962).
3. Ingram, An Introduction to the Biology of Yeasts (Pitman, London, 1955)).
4. Morrison, F. B., Seeds and Seeding (The Morrison Publishing Company, New York, 1956).
5. Gounelle, H., and Cofman, S., Ann. de Nutrition, 10 No. 5–6 (1956).