Aziz, M., M. Ullah, M. Hossain, and M. Ali. “Atrial Tachycardia: A Rare Type of Supra Ventricular Tachycardia”. Cardiovascular Journal, vol. 4, no. 2, Apr. 2012, pp. 164-70, doi:10.3329/cardio.v4i2.10461.