Budiasih, K.S., et al. “Enhancing Fastness and Ultraviolet Protection Factor of Pelthophorum Pterocarpum Natural Dye by Titania Nanoparticles Modification”. Asian Journal of Chemistry, vol. 35, no. 7, Aug. 2023, pp. 1585-90, doi:10.14233/ajchem.2023.27811.