Volarić, Josip, et al. “Differences in Recovery After Coronary Artery Bypass Grafting or Off-Pump Coronary Artery Bypass”. Annals of Biomedical and Clinical Research, vol. 1, no. 1, July 2022, pp. 56-60, http://abcr-mefmo.org/index.php/abcr/article/view/13.