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\bibitem{vanLoon_etal2017} {\textquotedblleft}\textit{Artificial orpiment, a new pigment in Rembrandt{\textquoteright}s palette}{\textquotedblright}. van Loon A, Noble P, Krekeler A, van der Snickt G, Janssens K, Abe Y, Nakai I, Dik J, Heritage science \textbf{5}, 26 (2017).   http://doi.org/10.1186/S40494-017-0138-1

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