1. Valvular heart disease;Braunwald,1984
2. Recognition and management of emergencies in valvular heart disease;Simpson;Med Clin North Am,1979
3. Echocardiography;Feigenbaum,1981
4. Value of echocardiography and nuclear techniques in assessment of valvular heart lesions;Iskandrian;Cardiovasc Clin,1986
5. Echocardiography;Feigenbaum,1984