Devadas, R. P., N. K. Murthy, and C. Yegammai. “Nitrogen Retention in Preschool Children on Opaque-2 Maize, Ordinary Maize and Skim Milk”. The Indian Journal of Nutrition and Dietetics, vol. 15, no. 1, Jan. 1978, pp. 1-4, https://informaticsjournals.com/index.php/ijnd/article/view/12187.