7World Steel Association.Crude Steel Statistics 2009[N].Belgium:World Steel Association.[cited 2010 February 19].Avaiable from http://www.worldsteel.org/.
8ISO.ISO 14040 International Standard,in Environmental Management-Life Cycle Assessment-Principles and Framework[S].Geneva,Switzerland;International Organisation for Standardization,2006.
9Finnveden G,Hauschild M Z,Ekvall T.Recent developments in Life Cycle Assessment[J].Journal of Environmental Management,2009,91(1):1-21.
10Chubbs S T,Steiner B A.Life Cycle Assessment in the Steel Industry[J].Environmental Progress,1998,17(2):92-95.
