Rajan, P., V. A. Daniel, R. Padmarani, M. Swaminathan, and S. Dhanaraj. 1975. “Effect of Insect Infestation on the Protein Efficiency Ratio of the Proteins of Maize and Cowpea”. The Indian Journal of Nutrition and Dietetics 12 (11):354-57. http://www.informaticsjournals.com/index.php/ijnd/article/view/11439.