1. Hydraulic formula for calculation of the area of the stenotic mitral valve, other cardiac valves, and central circulatory shunts;Gorlin;I Am Heart J,1951
2. Getting from A to C: from pressure waves to graphic display to interpretation;Dean;J Soc Cardiovasc Angiogr Interv,2022
3. Modified orifice equation for the calculation of mitral valve area;Cohen;Am Heart J,1972
4. A simplified valve formula for the calculation of stenotic cardiac valve areas;Hakki;Circulation,1981