Yang, Zhendong, Min Tong, Xueqin He, Lujia Han, Jianbin Guo, Tianjun Jing, Guangqun Huang, and Changming Shi. 2022. “Cu (II) and Ammonium Adsorption from Dairy Cattle Breeding Sewage by Phosphorus-Modified Dairy Cow Manure Hydrochar”. International Journal of Agricultural and Biological Engineering 15 (5). Beijing, China:78-84. https://www.ijabe.org/index.php/ijabe/article/view/7640.