1. Burch, G. E. and DePasquale, N. P. The spatial vectorcardiogram and ventricular gradient in left bundle branch block with autopsy studies. To be published.
2. The validity of the equilateral tetrahedron as a spatial reference system;Abildskov;Circulation,1950
3. A study of the spatial vectorcardiogram in left bundle branch block;Pantridge;Circulation,1950
4. An analysis of changes in the spatial vectorcardiogram with aging;Burch;Am. Heart J.,1958
5. The spatial vectorcardiogram in left ventricular hypertrophy;Horan;Circulation,1954