S. Ramkanth, C. Madhusudhana chetty, and Y. Sudhakar. “Development and Evaluation of Transdermal Drug Delivery System of Atenolol”. International Journal of Research in Pharmaceutical Sciences 2, no. 4 (October 20, 2011): 692-697. Accessed May 27, 2020. https://pharmascope.org/ijrps/article/view/987.