“Response Surface Methodology-Driven Optimization of HPLC for the Determination of Caffeine, Chlorogenic Acid, and Caffeic Acid in Coffee”. Tropical Journal of Natural Product Research 9, no. 12 (December 31, 2025): 6175 – 6183. Accessed January 1, 2026. https://www.tjnpr.org/index.php/home/article/view/7944.