Kocherla, Cyrus, and Kalgi Modi. “Congenital Quadricuspid Aortic Valve, a Rare Cause of Aortic Insufficiency in Adults: Case Report”. Journal of Cardiology and Cardiovascular Medicine 2, no. 1 (January 23, 2017): 003–007. Accessed December 31, 2025. https://www.hspioa.us/index.php/jccm/article/view/jccm-aid1005.