1. A Spatial Vector Analyzer for the Conventional Electrocardiogram;Simonson;Circulation,1953
2. Spatial Vector Electrocardiography;Grant,1952
3. Atlas of Spatial Vector Electrocardiography;Hurst,1952
4. Simonson, E., and Levine, R. B.: Personal communication.
5. Synthesis and Testing of Normalized and Orthogonalized Electrocardiographic Lead Systems With the Aid of a Mobile Dipole;Schmitt,1955