1. Verhandlungen der Deutschen Gesellschaft für Kreislaufforschung 18;Schaefer,1952
2. Spatial Vector Electrocardiography;Grant,1951
3. Vectorcardiographic Studies in Myocardial Injury;Karni,1954
4. Unipolar Lead Electrocardiography and Vectorcardiography;Goldberger,1953
5. Spatial Vectorcardiography;Grishman,1952