1. Standardized nomenclature and anatomic basis for regional tomographic analysis of the heart;Edwards;Mayo Clinic Proceedings,1981
2. A pathological study of emphysema of the lungs with chronic bronchitis;Heard;Thorax,1958
3. A modified apparatus for fixing lungs to study the pathology of emphysema;Heard;American Review of Respiratory Diseases,1967
4. Two-dimensional real-time ultrasonic imaging of the heart and great vessels;Tajik;Mayo Clinic Proceedings,1978