Khan, Purdil, et al. “EFFICACY OF TELMISARTAN AND ATENOLOL IN MANAGEMENT OF ESSENTIAL HYPERTENSION”. Journal of Ayub Medical College Abbottabad, vol. 24, no. 3-4, Dec. 2012, pp. 36-38, https://www.jamc.ayubmed.edu.pk/index.php/jamc/article/view/1922.