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Zumbühl, Stefan; Scherrer, Nadim; Berger, A.; Eggenberger, U. (2009). Early Viridian pigment composition characterization of a (hydrated) chromium oxide borate pigment Studies in Conservation, 54, pp. 149-159. DOI: 10.1179/sic.2009.54.3.149
Zumbühl, Stefan; Scherrer, Nadim; Eggenberger, U.; Berger, A.; Gross, M.; Ferreira, E. S. B. (14 May 2009). Early viridian pigment composition found in paintings by Van Gogh and contemporary artists: chemical and morphological characterisation of a vitreous (hydrated) chromium oxide borate pigment In: Eu-ARTECH Symposium on Van Gogh and Contemporaries. Amsterdam, Netherlands. 14-15 May 2009.
