共 9 条
- [7] 上市公司科技、R&D投入与业绩的实证研究[D]. 邱冬阳.重庆大学. 2002
- [8] The value-relevance of R&D and advertising expenditures: Evidence from Korea[J] . Bong H. Han,David Manry.International Journal of Accounting . 2004 (2)
- [9] The Economic Assessment of Research and Development[J] . George Libik.Management Science . 1969 (1)