Evan E. Bolton; Yanli Wang; Paul A. Thiessen; Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry. 4: 217—241. doi:10.1016/S1574-1400(08)00012-1.
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DE EP1704847, Kripp Thomas, Harpe Caroli, "Cosmetic agents and methods of mirrorizing keratin fibres", published 03/12/2008