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\bibitem{Monico_etal2013} {\textquotedblleft}\textit{Degradation process of lead chromate in paintings by Vincent van Gogh studied by means of spectromicroscopic methods : 4 : artificial aging of model samples of co-precipitates of lead chromate and lead sulfate}{\textquotedblright}. Monico L, Janssens K, Miliani C, van der Snickt G, Brunetti BG, Guidi MC, Radepont M, Cotte M, Analytical chemistry \textbf{85}, 860 (2013).   http://doi.org/10.1021/AC3021592

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