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2. Partial and complete prostheses in aortic insufficiency;Harken, D.E.; Soroff, H.S.; Taylor, W.J.; Lefemine, A.A.; Gupta, S.K.; Lunzer, S.;J. thorac. cardiovasc. Surg,1960
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4. Aortic replacement: Clinical experience with a semi-rigid ball-valve prosthesis;Starr, A.; Edwards, M.L.; McCord, C.W.; Griswold, H.E.;Circulation,1963