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2. Intraventricular block: physiologic considerations of clinical relevance;Wennemark,1970
3. Diseases of the Heart and Blood Vessels; Nomenclature and Criteria for Diagnosis;Criteria Committee of the New York Heart Association (Kossmann CE, chairman),1964
4. Recommendations for standardization of leads and specifications for instruments in electrocardiography and vectorcardiography;Committee on Electrocardiography, American Heart Association (Kossmann CE, chairman);Circulation,1967
5. Physiologic seminar: atrioventricular and intraventricular conduction: the irregular heart, new techniques and concepts;Hecht,1971