1. Identification and characterization of delta opioid binding sites in the bovine pineal;Aloyo;J. Pharmacol. Exp. Ther.,1992
2. Potent morphiceptin analogs: structure activity relationships and morphine-like activities;Chang;J. Pharmacol. Exp. Ther.,1983
3. Attenuation of morphine analgesia by alpha-MSH, MIF-I, melatonin and naloxone in the rat;Datta;Peptides,1982
4. Luzindole (N-0774): a novel melatonin receptor antagonist;Dubocovich;J. Pharmacol. Exp. Ther.,1988
5. Pineal opioid receptors and analgesic action of melatonin;Ebadi;J. Pineal Res.,1998