J. Iqbal, A. Ghaffar, A. Shahbaz, W. Sami, and J. S. Khan, “POSTOPERATIVE ARRHYTHMIAS AFTER CORONARY ARTERY BYPASS GRAFTING A COMPARISON BETWEEN ’˜OFF PUMP’ AND ’˜ON PUMP’ CABG”, J Ayub Med Coll Abbottabad, vol. 22, no. 3, pp. 48–53, Sep. 2010.