1. Atwater, W.O., and Bryant, A. P. (1899). Storrs (Conn.) Agr. Expt. Sta. Rept. p. 73.
2. “A Digest of Metabolism Experiments.”;Atwater,1897
3. “Proteins and Amino Acids in Nutrition”;Beach,1948
4. Beccari, I. B. (1746). De frumento, in “De Bononiensi Scientiarum et Artium Instituto atque Academia Commentarii,” Vol. II, Part 2. Bologna.