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\bibitem{Janssens_etal2000} {\textquotedblleft}\textit{Use of microscopic XRF for non-destructive analysis in art an archaeometry}{\textquotedblright}. Janssens K, Vittiglio G, Deraedt I, Aerts A, Vekemans B, Vincze L, Wei F, de Ryck I, Schalm O, Adams F, Rindby A, Kn{\"o}chel A, Simionovici AS, Snigirev A, X-ray spectrometry \textbf{29}, 73 (2000).   http://doi.org/10.1002/(SICI)1097-4539(200001/02)29:1<73::AID-XRS416>3.3.CO;2-D

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