1. A Common and Important Error in the Measurement of Auriculoventricular Conduction Time;White;J. Clin. Invest.,1939
2. Diseases of the Heart;Vaquez,1924
3. Clinical Electrocardiography;Lewis,1937
4. The Fundamentals of Electrocardiographic Interpretation;Carter,1937
5. Clinical Aspects of the Electrocardiogram;Pardee,1933