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Adverse selection and financing of innovation: is there a need for R&D subsidies?[J] . Tuomas Takalo,Tanja Tanayama.The Journal of Technology Transfer . 2010 (1)
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R&D and subsidies at the firm level: an application of parametric and semiparametric two‐step selection models[J] . KatrinHussinger.J. Appl. Econ. . 2008 (6)