1. Use of ultrasonic reflectoscope for the continuous recording of movements of heart walls;Edler;Kungl Fysiogr Sallsk Lung Forth,1954
2. Preliminary studies on ultrasonics in cardiological diagnosis, I. Experimental observations on cardiac echo valves. II. The use of A- scope ultrasound apparatus in the diagnosis of heart disease;Hsu;Acta Acad Med Prim Shanghai,1964
3. Study of examining of the heart with ultrasonics, IV: clinical applications;Yoshida;Jpn Circ J,1956
4. Visualization of cardiac dynamics with real-time B-mode ultrasonic scanner;Eggleton,1975
5. Esophageal echocardiography;Frazin;Circulation,1976