Willén , Roger, Helena Willén, Wieslaw T. Dubiel, and Lennart Johansson. “Composition of Surface Layers in Unfixed Autologous Fascia Lata Heart Valve Grafts: A Transmission Electron Microscopical Study”. Upsala Journal of Medical Sciences 88, no. 1 (March 1, 1983): 25-31. Accessed April 5, 2026. https://ujms.net/index.php/ujms/article/view/7061.