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Stephens, P. J.; Devlin, F. J.; Cheeseman, J. R.; Frisch, M. J.; Bortolini, O.; Besse, P. Determination of absolute configuration using calculation of optical rotation. Chirality. 2003, 15: S57–64. PMID 12884375. doi:10.1002/chir.10270.
Gal, Joseph. The Discovery of Stereoselectivity at Biological Receptors: Arnaldo Piutti and the Taste of the Asparagine Enantiomers-History and Analysis on the 125th Anniversary. Chirality. 2012, 24 (12): 959–976. PMID 23034823. doi:10.1002/chir.22071.
Lepola U, Wade A, Andersen HF. Do equivalent doses of escitalopram and citalopram have similar efficacy? A pooled analysis of two positive placebo-controlled studies in major depressive disorder. Int Clin Psychopharmacol. May 2004, 19 (3): 149–55. PMID 15107657. S2CID 36768144. doi:10.1097/00004850-200405000-00005.
Hyttel, J.; Bøgesø, K. P.; Perregaard, J.; Sánchez, C. The pharmacological effect of citalopram resides in the (S)-(+)-enantiomer. Journal of Neural Transmission. 1992, 88 (2): 157–160. PMID 1632943. S2CID 20110906. doi:10.1007/BF01244820.
Lepola U, Wade A, Andersen HF. Do equivalent doses of escitalopram and citalopram have similar efficacy? A pooled analysis of two positive placebo-controlled studies in major depressive disorder. Int Clin Psychopharmacol. May 2004, 19 (3): 149–55. PMID 15107657. S2CID 36768144. doi:10.1097/00004850-200405000-00005.
Hyttel, J.; Bøgesø, K. P.; Perregaard, J.; Sánchez, C. The pharmacological effect of citalopram resides in the (S)-(+)-enantiomer. Journal of Neural Transmission. 1992, 88 (2): 157–160. PMID 1632943. S2CID 20110906. doi:10.1007/BF01244820.