1. 1. Rosland J.H., Hunskaar S., and Hole K. Diazepam attenuates morphine antinociception test-dependently in mice, Pharmacol.Toxicol 1990; 66: 382-386.
2. 2. Matla J. and Langwinski R. Effect of benzodiazepines on the central action of narcotic analgesics. Pol.J Pharmacol.Pharm 1982; 34: 135-144.
3. 3. Shannon H.E., Holtzman S.G., and Davis D.C. Interactions between narcotic analgesics and benzodiazepine derivatives on behavior in the mouse. J Pharmacol.Exp.Ther 1976; 199: 389-399.
4. 4. Oliverio A., Castellano C., and Puglisi-Allegra S. Opiate analgesia: evidence for circadian rhythms in mice. Brain Res 1982; 249: 265-270.
5. 5. Guney H.Z., Gorgun C.Z., Tunctan B., Uludag O., Hodoglugil U., Abacioglu N., and Zengil H. Circadian-rhythm-dependent effects of L-NG-nitroarginine methyl ester (L-NAME) on morphine-induced analgesia. Chronobiol.Int 1998; 15: 283-289.