8Lindholm 0 G.Factors affecting the performance of combined versus separate sewer systems[J]PROGRESS IN WATER TECHNOLOGY, 1975,2 (7) : 265-276.
9Carleton M G.Comparison of overflows from separate and combined sewers-Quantity and quality[J].WATER SCIENCE AND TECHNOLOGY, 1990,22(10/11) :31-38.
10Brombach H,Weiss G,Fuehs S.A new database on urban runoff pol- lution :comparison of separate and combined sewer systems [J].WATER SCIENCE AND TECHNOLOGY ,2005,51 (2) : 119-128.
