Siti Salwa Abd Gani, Nur Fauwizah Azahar, and Nor Fadzillah Mokhtar. 2018. “Response Surface Optimization of High AntioxidativeExtraction from Curcuma Zedoaria Leaves”. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 43 (1):90-103. https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/2672.