Hafizullah, M., E. Zaidi, and F. Abbas. “Comparative Efficacy of Amlodipine and Slow Release Isradipine As a Monotherapy in Hypertensive Patients”. Journal of Postgraduate Medical Institute, vol. 14, no. 2, Sept. 2011, https://jpmi.org.pk/index.php/jpmi/article/view/695.