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\bibitem{vanderSnickt_etal2006} {\textquotedblleft}\textit{Blue enamel on sixteenth- and seventeenth-century window glass : deterioration, microstructure, composition and preparation}{\textquotedblright}. van der Snickt G, Schalm O, Caen J, Janssens K, Schreiner M, Studies in conservation \textbf{51}, 212 (2006).   http://doi.org/10.1179/SIC.2006.51.3.212

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