Pham, . T. H. and Ngo Thanh Binh (2020) “Role of phosphoric acid and activated carbon in degumming and bleaching stages of Tra catfish oil refining process”, Journal of Technical Education Science, 15(1), pp. 51–58. Available at: https://jte.edu.vn/index.php/jte/article/view/208 (Accessed: 7 April 2026).