1. Differentiation between normal and abnormal in electrocardiography;Simonson,1961
2. Classification of the sex of healthy and abnormal subjects using the electrocardiogram;Bourdillon,1975
3. Adult normal limits. Appendix 1;Macfarlane,2011
4. Normal limits of the high fidelity pediatric ECG: preliminary observations;Macfarlane;J Electrocardiol,1990
5. The normal electrocardiogram and vectorcardiogram;Macfarlane,2011