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2. Phonocardiographic evaluation of Starr-Edwards aortic valve prosthesis;Cameron;Circulation,1970
3. Ball variance in the model 1000 Starr-Edwards valve prosthesis;Constantino;Circulation,1970
4. Limitations of phonocardiographic assessment of ball variance;Delman;Ann. Thorac. Surg.,1970
5. Sound spectrograms in simulated aortic ball variance;Delman;Circulation,1970