1. Effects of vasoconstrictor agents on cardiac irritability;GILBERT J. L.;J. Pharmacol. & Exper. Therap.
2. MEEK , W. J. , HATHAWAY , H. R. , AND ORTH, 0. S.: The effects of ether, chloroform and cyclopropane on cardiac automatieity. J. Pharmacol. & Exper. Therap. 61 : 240 , 1937 .
3. Action of sympathominietie amines in cyclopropane, ether and chloroform anesthesia;ORTH S.;J. Pharmacol. & Exper. Therap.,1939
4. Ventricular Arrhythmias Induced by Sympathomimetic Amines in Unanesthetized Dogs Following Coronary Artery Occlusion
5. BROOKS C. M C C HOFFMAN B. F. SUCKLING E. E. AND ORIAS 0.: The Excitability of the Heart. New York Grime & Stratton 1955 chap. 6.