共 11 条
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Do R&D tax credits work? Evidence from a panel of countries 1979–1997.[J].Nick Bloom;Rachel Griffith;John Van Reenen.Journal of Public Economics.2002, 1
[2]
Interindustry R&D Spillovers; Rates of Return; and Production in High-Tech Industries.[J].Jeffrey I. Bernstein;M. Ishaq Nadiri.The American Economic Review.1988, 2