1. E. W. Fitzhugh, ‘Red Lead and Minium’, in Artists’ Pigments: A Handbook of Their History and Characteristics, vol. 1, R. L. Feller, Ed. Washington: National Gallery of Art, 1986, pp. 109–139. [Online]. Available: https://www.nga.gov/content/dam/ngaweb/research/publications/pdfs/artists-pigments-vol1.pdf
2. R. J. Gettens, H. Kühn, and W. T. Chase, ‘Lead White’, in Artists’ Pigments: A Handbook of Their History and Characteristics, vol. 2, A. Roy, Ed. Washington: National Gallery of Art, 1993, pp. 67–81. [Online]. Available: https://www.nga.gov/content/dam/ngaweb/research/publications/pdfs/artists-pigments-vol2.pdf
3. C. d’Andrea di Cennini, ‘On the Character of White Lead. Chapter LVIIII’, in The Craftsman’s Handbook. The Italian ‘Il Libro dell’ Arte.’ Translated by Daniel V. Thompson, Jr, New York: Dover Publications, Inc, 1933, p. 34. [Online]. Available: http://www.noteaccess.com/Texts/Cennini/2.htm
4. F. Baldinucci, ‘Biacca’, Vocabolario Toscano dell’Arte del Disegno. Firenze, p. 21, 1681. [Online]. Available: ark:/12148/bpt6k9762233v
5. S.M. Lussier, G.D. Smith, A review of the phenomenon of lead white darkening and its conversion treatment. Stud. Conserv. 52(sup1), 41–53 (2007). https://doi.org/10.1179/sic.2007.52.Supplement-1.41