Otero, Vanessa; Pinto, Joana V.; Carlyle, Leslie; Vilarigues, Márcia; Cotte, Marine; João Melo, Maria (2017). "Nineteenth Century Chrome Yellow and Chrome Deep from Winsor & Newton". Studies in Conservation. 62 (3): 123–149. doi:10.1080/00393630.2015.1131478. S2CID138176187 – via EBSCO Host.
Otero, Vanessa; Pinto, Joana V.; Carlyle, Leslie; Vilarigues, Márcia; Cotte, Marine; João Melo, Maria (2017). "Nineteenth Century Chrome Yellow and Chrome Deep from Winsor & Newton". Studies in Conservation. 62 (3): 123–149. doi:10.1080/00393630.2015.1131478. S2CID138176187 – via EBSCO Host.