1. Zhang Xinwen. Economic Model of Municipal Water Recycling and Technique Supporting System[D]. DaLian: Dalian University of Technology, (2006).
2. Yu Jinshou. Soft sensing Technology and Its Application[J]. Process Automation Instrumentation, 2008, 29(1) : 1 -7.
3. Li Lin. Application of PID Control Based on CMAC in Sewage Treatment[J]. Science Technology and Engineering, 2010, 10(10): 2574 -2576.
4. Zhu Xuefeng. Soft Measurement Technology and Application[J]. Journal of South China University(Natural Science Edition), 2002, 30( 11) : 61 -67.
5. Liu Xingzi, Lin Liang. Research Water Pollution Control System With Fuzzy Variables[J]. Fuzzy Systems and Mathematics, 2009, 23( 5) : 168-174.