Boon, J.J. et al. 2001. Imaging Microspectroscopic, Secondary Ion Mass Spectrometric and Electron Microscopic Studies on Discoloured and Partially Discoloured Smalt in Cross-sections of 16th Century Paintings. CHIMIA. 55, 11 (Nov. 2001), 952. DOI:https://doi.org/10.2533/chimia.2001.952.