1. Primary myocardial disease in infancy and childhood;Rosenbaum;Am. J. Dis. Child.,1953
2. Pediatric electrocardiography;Guntheroth,1965
3. Vectorcardiography in congenital heart disease;Ellison,1972
4. LaFarge, C. G., and Keane, J. F.: Unpublished data; personal communication, 1974.
5. Pediatric cardiology;Nadas,1972