1. Appel JB, Cunningham KA (1986) The use of drug discrimination procedures to characterize hallucinogenic drug actions. Psychopharmacol Bull 22:959–967
2. Appel JB, White FJ, Holohean AM (1982) Analyzing mechanisms of hallucinogenic drug action with drug discrimination procedures. Neurosci Biobehav Rev 6:529–536
3. Burt PR, Creese I, Snyder SH (1976) Binding interactions of lysergic acid and diethylamide related agents with dopaminergic receptors in brain. Mol Pharmacol 12:631–638
4. Colpaert FC, Janssen PAJ (1983) A characterization of LSD-antagonist effects of pirenpirone in the rat. Neuropharmacology 22:1001–1005
5. Colpaert FC, Niemegeers CJE, Janssen PAJ (1982) A drug discrimination analysis of lysergic acid diethylamide (LSD): in vivo agonist and antagonist effects of purported 5-hydroxytryptamine antagonists and of pirenpirone, a LSD antagonist. J Pharmacol Exp Ther 221:206–214