Wellendorph P, Høg S, Greenwood JR, de Lichtenberg A, Nielsen B, Frølund B, Brehm L, Clausen RP, Bräuner-Osborne H (2005). "Novel Cyclic γ-Hydroxybutyrate (GHB) Analogs with High Affinity and Stereoselectivity of Binding to GHB Sites in Rat Brain". The Journal of Pharmacology and Experimental Therapeutics. 315 (1): 346–351. doi:10.1124/jpet.105.090472. PMID16014570.
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Wellendorph P, Høg S, Greenwood JR, de Lichtenberg A, Nielsen B, Frølund B, Brehm L, Clausen RP, Bräuner-Osborne H (2005). "Novel Cyclic γ-Hydroxybutyrate (GHB) Analogs with High Affinity and Stereoselectivity of Binding to GHB Sites in Rat Brain". The Journal of Pharmacology and Experimental Therapeutics. 315 (1): 346–351. doi:10.1124/jpet.105.090472. PMID16014570.