1. Balance of phosphorus in a rotation system with Winter – Wheat and Rice;Baoguo;Journal of Agro-Environment Science,2005
2. Preliminary study on characteristics of nitrogen and phosphorus runoff losses from rice fields in Hai River Basin;Chen;Journal of Agro-Environment Science,2011
3. Environmental management options practiced in Europe to mitigate agricultural nutrient pollution of ground and surface water;Gao;Journal of Ecology and Rural Environment,1999
4. Diffusion pollution from livestock and poultry rearing in the Yangtze Delta, China;Gu;Environmental Science and Pollution Research,2008
5. HaiHe WRPB, (n.d.). Introduction of Integrated Water Resources Planning of Hai River Basin. Water Resources Protection Bureau of HaiHe River Basin. http://www.hwcc.gov.cn/pub/hwcc/static/3.htm (in Chinese).