1. Bunge, G., Textbook of Physiological and Pathological Chemistry, fourth ed., 118 (1898).
2. Abderhalden, E., Z. physiol. Chem., 26, 487 (1898); 27, 408 (1898).
3. Powers, G., J. Pediat., 3, 201 (1933).
4. Brodie, S., Bioenergetics and Growth (Reinhold, New York, 1945).
5. Minot, C. S., The Problem of Age, Growth and Death, 108 (Putnam, New York, 1908).