Do, T.-T., Nguyen, T.-H., Nguyen, T.-D. and Van, H.-T. (2025) “The ammonium adsorption capacity of coffee husk‑derived activated carbon composite with \(\text{MnFe}_2\text{O}_4\)”, HPU2 Journal of Science: Natural Sciences and Technology, 4(01), pp. 39–47. doi: 10.56764/hpu2.jos.2025.4.01.39-47.