1. Plastic valvular prosthesis;Hufnagel,1950
2. The surgical correction of aortic regurgitation: The preliminary report;Hufnagel;Bull Georgetown Univ Med Cent,1953
3. Prosthetic valve endocarditis;Wilson,1982
4. Systemic thromboembolism in mitral and aortic Starr-Edwards prostheses: a 10–19-year follow-up;Fuster;Circulation,1982
5. Clinical durability of the Hancock porcine prosthetic valve;Oyer;J Thorac Cardiovasc Surg,1980