Kundu, Shruti, et al. “A Comparative Study on Regional Cerebral Oxygen Saturation and Central Venous Oxygen Saturation As Predictors of Outcome in Patients on off-Pump Coronary Artery Bypass Graft Surgery”. Asian Journal of Medical Sciences, vol. 13, no. 2, Feb. 2022, pp. 75-80, https://nepjol.info./index.php/AJMS/article/view/40906.