Mahltig, Boris. “Overview on Natural Dyes and Their IR-Spectra - Part III: Natural Dyes Based on Wooden Materials”. Communications in Development and Assembling of Textile Products 5, no. 1 (August 15, 2024): 81–101. Accessed November 3, 2025. https://cdatp.publia.org/cdatp/article/view/152.