Gowtham T., Punitha S., Thrishala B., Soujanya P., and Rajasekar S. “Formulation and Evaluation of Atorvastatin Calcium Sustained Release Matrix Tablets”. International Journal of Research in Pharmaceutical Sciences, vol. 4, no. 1, Mar. 2013, pp. 82-87, https://ijrps.com/home/article/view/3554.