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2. Opiate receptors in the rabbit iris;Drago;Naunyn-Schmiedeberg's Arch. Pharmacol.,1980
3. Ocular opioids: distribution and function;Drago,1984
4. Endorphins in the eye: evidence for a possible local action;Drago,1984
5. Effects of opiates and opioids on intraocular pressure of rabbits and humans;Drago;Clin. Exp. Pharmacol. Physiol.,1985