1. Bertalmio AJ, Woods JH (1987) Differentiation between mu and kappa receptor-mediated effects in opioid drug discrimination: apparent pA2 analysis. J Pharmacol Exp Ther 243:591–597
2. Bertalmio AJ, Herling S, Hampton RY, Winger G, Woods JH (1982) A procedure for rapid evaluation of the discriminative stimulus effects of drugs. J Pharmacol Methods 7:289–299
3. Bertalmio A J, Winger GD, Woods JH (1984) Mu and kappa receptor-mediated opioid discriminative effects in rhesus monkeys: pA analysis. Fed Proc 43:966
4. Casy AF, Parfitt RT (1986) Opioid analgesics: chemistry and receptors. Plenum, New York
5. Colpaert FC, Niemegeers CJE, Janssen PAJ (1976a) On the ability of narcotic antagonists to produce the narcotic cue. J Pharmacol Exp Ther 197:180–187