1. Echocardiography;Feigenbaum,1976
2. Non-invasive diagnostic techniques in cardiology;Benchimol,1977
3. Echocardiography interpretation and diagnosis;Kleid,1978
4. Echocardiographic findings in patients with prosthetic heart valve malfunction;Cunha,1980
5. Echocardiographic and phonocardiographic confirmation of suspected caged mitral valve malfunction;Berndt;Chest,1976