Diab, D. G., and H. I. Taman. “The Effect of Different Levels of Elevated Intraperitoneal Pressure on the Cerebral Perfusion Pressure During Laparoscopic Cholecystectomy”. Anaesthesia, Pain & Intensive Care, Vol. 23, no. 1, July 2019, https://www.apicareonline.com/index.php/APIC/article/view/1044.