4Dominique Guellec,Bruno Van Pottlesberghe.The Im- pact of Public R&D Expenditure on Business R&D[].OECD Working Paper.2000
5Jose Garcia-Quevedo.Do Public Subsidies Complement Business R&D?A Meta-analysis of the Econometric Evidence[].Evaluation of Government Funded R&D ActivitiesZEW.2003
6David, P.A.,B.H Hall,& A.A.Toole.Is Public R&D a complement or substitute for private R&D? A review of the economic evidence[].Research Policy.2000
