Cheng S P, Liu Y B, Cui Y B, Ding S R, Shi Y Z
Department of Environmental Sciences and Engineering and the State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing 210093, People's Republic of China.
Bull Environ Contam Toxicol. 1996 Dec;57(6):972-8. doi: 10.1007/s001289900285.