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2. “Electrocardiographic Changes Following the Inhalation of Tobacco Smoke,”;Graybill;American Heart J.,1939
3. “The Effect of Smoking Cigarettes and the Intravenous Administration of Nicotine on the Heart and Peripheral Blood Vessels,”;Roth;Med. Clin. N. A.,1945
4. “The Acute Effect of Tobacco Smoking and Nicotine on the Electrocardiogram Especially During Hypoxia,”;Von Ahn;Acta. Med. Scandin.,1954
5. “In Allergy in Theory and Practice,”;Harkavy,1947