2MILL, J. The Principles of Political Economy[M]. New York. D. Appleton And Company, 1848.
3REES, J. Regulation And Private Participation In The Water And Sanitation Sector [ J ]. Natural Resources Forum, 1998, 22(2). 95- 105.
4BEECHER, J . P. , J. LANDERS. Cost Allocation and Rate Design for Water Utilities. Columhus[M] . Ohio. The National Regulatory Research Institute, 1992.
