4Amy Jocelyn Glass,Kamal Saggi. Innovation and wage effects of inernational outsourcing[J].European Economic Review,2001,(45):67-80.
5Catherine J.Morroson Paul,Donald S.Siegel. The Impacts of Technology,Trade and Outsourcing on Employment and Labor Composition[J].Scand J Of Ecomomics,2001,(02):241-264.