1. Tolerance, physical dependence, and receptors;Collier;Adv. Drug. Res.,1966
2. The offset of morphine tolerance in rats and mice;Cox;Br. J. Pharmac.,1975
3. The effects of analgesic drugs on the release of acetylcholine from electrically stimulated guinea pig ileum;Cox;Br. J. Pharmac.,1966
4. Receptor binding and pharmacological activity of opiates in the guinea pig intestine;Creese;J. Pharmac. exp. Ther.,1975