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\bibitem{DeKeyser_etal2017} {\textquotedblleft}\textit{Jan Davidsz. de Heem (1606-1684): a technical examination of fruit and flower still lifes combining MA-XRF scanning, cross-section analysis and technical historical sources}{\textquotedblright}. De Keyser N, van der Snickt G, Van Loon A, Legrand S, Wallert A, Janssens K, Heritage science \textbf{5}, 38 (2017).   http://doi.org/10.1186/S40494-017-0151-4

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