REFERENCES
- Simonson, E.: Differentiation Between Normal and Abnormal in Electrocardiography. St. Louis, The C. V. Mosby Company, 1961, p. 298.
- Committee on Electrocardiography of the American Heart Association: Recommendations for standardization of electrocardiographic and vectorcardiographic leads. Circulation 10: 564–573 (October) 1954.