共 79 条
- [1] Adams J.D., 2005, NBER WORKING PAPER S
- [2] Adams J.D., 2008, NBER WORKING PAPER S
- [5] Aiken L.S., 1991, Multiple regression: Testing and interpreting interaction
- [8] [Anonymous], 2013, OECD Science, Technology and Industry Scoreboard 2013: Innovation for Growth, DOI 10.1787/sti_scoreboard-2013-en
- [9] [Anonymous], 2009, OECD SCI TECHNOLOGY, DOI DOI 10.1787/STI_SCOREBOARD-2009-39-EN
- [10] [Anonymous], 1996, 5712 NBER