“Ultraviolet spectrophotometric method: Not possible for the simultaneous estimation of active constituents in Phyllanthus amarus”, Journal of Pharmaceutical Negative Results, vol. 8, no. 1, pp. 2–6, Jan. 2017, Accessed: Jun. 06, 2026. [Online]. Available: https://www.pnrjournal.com/index.php/home/article/view/105