Singh, Padam, and Anil Kumar. 2002. “Is the Norm of 2400, 2100 Kcal Per Capita Per Day and 2425 Kcal Per Cu Appropriate?”. The Indian Journal of Nutrition and Dietetics 39 (6):269-76. https://informaticsjournals.co.in/index.php/ijnd/article/view/6766.