Tivcheva, Yoanna Vladimirova, Mihail Angelov, Nikolai Krastev, Cvetomir Kirilov, Dimo Krastev, L Jelev, and A Apostolov. “Polar and Extrahilar Renal Arteries: A Case Report”. Archives of Community Medicine and Public Health 9, no. 1 (January 27, 2023): 001–003. Accessed September 7, 2025. https://www.healthdisgroup.com/acmph/article/view/ACMPH-9-293.