By Gu R.R.   Li Y.   in Journal of Environmental Management

ISSN:0301-4797|66|1|43-56

Academic Press‎(2002)‎

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By Chung S.-w.   Gu R.R.   in Advances in Environmental Research

ISSN:1093-0191|7|4|933-947

Elsevier‎(2003)‎

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