Tran, Thy Minh Kieu, Taiwo Akanbi, Timothy Kirkman, Minh Huu Nguyen, and Quan Van Vuong. “Optimal Aqueous Extraction Conditions As A Green Technique for Recovery of Phenolic Antioxidants from Robusta Dried Coffee Pulp”. European Journal of Engineering and Technology Research 5, no. 9 (September 10, 2020): 1069-1074. Accessed April 18, 2021. https://ejers.org/index.php/ejers/article/view/2116.