1. Cardiac studies by ultrasound;Edler,1959
2. The diagnosis of intraatrial tumors and thrombi by the ultrasonic echo method;Effert;Ger Med Monthly,1959
3. Echocardiographic diagnosis of left atrial myxoma;Schatienberg,1968
4. Ultrasound for the diagnosis of atrial tumor;Popp;Ann Intern Med,1969
5. Diagnosis of atrial tumors by ultrasound;Wolfe;Circulation,1969