Leksuksri J, Hongsri K, Ardsamang T. The Feasibility Study on Using Indigo Residues from the Natural Dye Extraction Process to Produce Handicraft Paper . Bull Appl Sci. [internet]. 2023 Apr. 26 [cited 2026 Apr. 22];12(1):57-63. available from: https://ph03.tci-thaijo.org/index.php/BAS/article/view/bas_12-5_2023