Murthy, N. K., R. Parvatham, and G. P. Jeyanthi. “Biochemical Changes in Elderly Women Belonging to a Low Socio - Economic Group”. The Indian Journal of Nutrition and Dietetics, vol. 23, no. 2, Feb. 1986, pp. 31-34, https://informaticsjournals.co.in/index.php/ijnd/article/view/13305.