8GLACHANT M. The Political Economy of Water Effluent Charges in France: Why are Rates Kept Low? [J] . European Journal of Law and Economics, 2002, 14:27-43.
9SANG- HO LEE, ILTAE KIM. Self - Selection and Optimal Nonlinear Effluent Charges [ J ]. Environmental and Resource Economics, 2000, 16: 1-14.
10Hem R. Competition and access pricing in the UK water industry[J]. Utilities Policy, 2001, 10:117 - 127.