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Pertwee RG, Griffin G, Lainton JA, Huffman JW. Pharmacological characterization of three novel cannabinoid receptor agonists in the mouse isolated vas deferens. European Journal of Pharmacology. September 1995, 284 (3): 241–247. PMID 8666005. doi:10.1016/0014-2999(95)00318-f.