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Kume T, Nishikawa H, Taguchi R, Hashino A, Katsuki H, Kaneko S, et al. (November 2002). "Antagonism of NMDA receptors by sigma receptor ligands attenuates chemical ischemia-induced neuronal death in vitro". European Journal of Pharmacology. 455 (2–3): 91–100. doi:10.1016/S0014-2999(02)02582-7. PMID12445574.
Klein M, Musacchio JM (October 10, 1988). "Dextromethorphan binding sites in the guinea pig brain". Cellular and Molecular Neurobiology. 8 (2): 149–156. doi:10.1007/BF00711241. PMID3044591. S2CID33844132.
Klein M, Musacchio JM (October 10, 1988). "Dextromethorphan binding sites in the guinea pig brain". Cellular and Molecular Neurobiology. 8 (2): 149–156. doi:10.1007/BF00711241. PMID3044591. S2CID33844132.