1. Electrocardiographic studies in normal infants and children;Ziegler,1951
2. Pediatric electrocardiography and vectorcardiography;Namin,1966
3. The normal electrocardiogram and vectorcardiogram in children;Namin,1966
4. The normal electrocardiogram in newborns and infants (a critical review);Liebman,1966
5. Electrocardiography;Liebman,1968