P. Dhakal, P. Kayastha, S. Paudel, S. Suwal, M. R. Sharma, and R. K. Ghimire, “Anatomical Variations in Circle of Willis in Patients Undergoing CT Cerebral Angiography in a Tertiary Hospital in Nepal: A Descriptive Cross-sectional Study”, J Nepal Med Assoc, vol. 58, no. 232, pp. 1065–1068, Dec. 2020.