Khan, Awais Ali, et al. “Use of Per-Operative Angiogram and Doppler Ultrasound As an Adjunct to Assess the Cerebral Vessels Following Aneurysmal Brain Surgery”. Pakistan Armed Forces Medical Journal, vol. 73, no. 5, Oct. 2023, pp. 1456-9, doi:10.51253/pafmj.v73i5.8979.