Jain, D. P., Jain, D. R., Jain, D. A. K., Jindal, D. M., & Dixit, D. R. (2012). Aging and Its Theories: Aging and Its Theories. National Journal of Integrated Research in Medicine, 3(2), 170–173. https://doi.org/10.70284/njirm.v3i2.292