Dietemann, P., Kälin, M., Sudano, C., Knochenmuss, R., & Zenobi, R. (2001). Influence of Sunlight during Harvest on the Oxidation and Yellowing of Natural Mastic Resins Used as Varnishes on Artwork. CHIMIA, 55(11), 972. https://doi.org/10.2533/chimia.2001.972