Hoque, H., K. Ahmed, M. F. I. Kabir, and N. Fatema. “A Comparative Study With Carvedilol and Ivabradine in Ischaemic Heart Disease Patients With Heart Failure”. University Heart Journal, vol. 15, no. 2, Aug. 2019, pp. 60-62, doi:10.3329/uhj.v15i2.42648.