Hien, T. T., Vu, N. T., Thien, P. H., Thanh, N. D., & Tuan, P. D. (2017). Synthesis of novel magnetic adsorbents from coffee husks by hydrothermal carbonization. Vietnam Journal of Science and Technology, 55(4), 526–533. https://doi.org/10.15625/2525-2518/55/4/9016