Nguyen, H. D., T. V. Nguyen, T. T. H. Dinh, D. H. Phan Do, and H. D. Tran. “Ammonia Oxidation Capacity of Bacillus Bacteria in Swine Wastewater After Biogas Treatment”. Hue University Journal of Science: Natural Science, vol. 131, no. 1D, Dec. 2022, pp. 77-87, doi:10.26459/hueunijns.v131i1D.7006.