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W.C. Ko, S.W. Kuo, J.R. Sheu, C.H. Lin i inni. Relaxant effects of quercetin methyl ether derivatives in isolated guinea pig trachea and their structure-activity relationships. „Planta Med”. 65 (3), s. 273–275, 1999. DOI: 10.1055/s-2006-960776. PMID: 10232080. (ang.).