1. Long-term experience with porcine aortic valve xenografts;Stinson;J Thorac Cardiovasc Surg,1977
2. Aortic valve allografts for mitral valve replacement;Stinson;Surgery,1975
3. Fate of a second porcine bioprosthetic valve;Magilligan;J Thorac Cardiovasc Surg,1983
4. Continuing improvements in valvular bioprostheses;Carpentier;J Thorac Cardiovasc Surg,1982
5. Comparative evaluation of mitral valve repair and replacement with Starr, Björk, and porcine valve prostheses;Perier;Circulation,1984