1. Electrophysiologic effects of atropine on atrioventricular conduction studied by His bundle electrogram;Akhtar;Amer. J. Cardiol.,1974
2. Chronotropic responses following direct electrical stimulation of the isolated sinoatrial node: A pharmacologic evaluation;Amory;J. Pharmacol. Exptl. Therap.,1962
3. Introduction to Chemical Pharmacology;Barlow,1968
4. The Sinoatrial Pacemaker of the Heart;Brooks,1972
5. An isolated heart perfusion system adapted to the determination of nongaseous metabolites;Chenoweth;J. Lab. Clin. Med.,1946