Kowsalya, S., and U. Chandrasekhar. “Total Carotenoid and Beta Carotene Contents of Selected Stored Plant Foods”. The Indian Journal of Nutrition and Dietetics, vol. 40, no. 4, Apr. 2003, pp. 122-8, http://www.informaticsjournals.com/index.php/ijnd/article/view/6693.