Ray, P. R., A. K. Bandyopadhyay, and P. K. Ghatak. “Use of Sorbic Acid for Shelf Life Enhancement of Cow’s Milk Peda”. The Indian Journal of Nutrition and Dietetics, vol. 36, no. 9, Sept. 1999, pp. 412-7, http://www.informaticsjournals.com/index.php/ijnd/article/view/7083.