共 5 条
[3]
创新之战[M]. 机械工业出版社 , (德)克里斯托弗-弗里德里克·冯·布朗(Christoph-FriedrichvonBraun)著, 1999
[4]
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)