1. Adenosine 3′,5′-phosphate in biological materials. I. Purification and properties of cyclic 3′,5′-nucleotide phosphodiesterase and use of this enzyme to characterize adenosine 3′,5′-phosphate in human urine;Butcher;J. biol. Chem.,1962
2. The effect of isoprenaline on the responses to vagal stimulation and to acetylcholine in the guinea-pig isolated heart;Hadhazy;Br. J. Pharmac.,1970
3. Local cholinergic-adrenergic interaction: mechanism for the biphasic chronotropic response to nerve stimulation;Leaders;J. Pharmac., exp. Ther.,1963
4. Mechanism of the positive chronotropic response to nicotine;Leaders;J. Pharmac. exp. Ther.,1962