共 8 条
- [5] Evaluating continuous training programmes by using the generalized propensity score[J] . JochenKluve,HilmarSchneider,ArneUhlendorff,ZhongZhao.Journal of the Royal Statistical Society: Series A (Statistics in Society) . 2012 (2)
- [6] R&D subsidies and private R&D expenditures: evidence from Italian manufacturing data[J] . OlivieroA. Carboni.International Review of Applied Economics . 2011 (4)
- [7] The differential effects of public R&D support on firm R&D: Theory and evidence from multi-country data[J] . Chang-Yang Lee.Technovation . 2011 (5)
- [8] 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)