1. Use of ultrasonic reflectoscope for continuous recording of movement of heart walls;Edler;Kurgl Fysiogr Sallad I Lund Fordhandl,1954
2. Digital recording, display and storage of echocardiograms;Feigenbaum;J Am Soc Echocardiography,1988
3. Standardized nomenclature and anatomic basis for regional tomographic analysis of the heart;Edwards,1981
4. Advantages and applications of the centerline method for characterizing regional ventricular function;Sheehan;Circulation,1986
5. Controversy: should echocardiography be a routine in AMI?;Parisi;Choices in Cardiology,1978