9GUERRIERI P,MELICIANI V.Technology and internation.al competitiveness:the interdependence between manufac.turing and producer services[J].Structural change and eco.nomic dynamics,2005(4):489-502.
10ESWARAN M,KOTWAL A.The role of the service sector inthe process of industrialization[J].Journal of developmenteconomics,2002(2):401-42.