Dhanraj, Dhanasekaran, and Sekar Kaliaperumal. “Comparative Evaluation of Various Extraction Methods on Quantity and Quality of Indigo Dye from Indigofera Tinctoria L”. Journal of Tropical Agriculture, vol. 59, no. 2, Feb. 2022, https://jtropag.kau.in/index.php/ojs2/article/view/975.