[3]
Is public R&D a complement or substitute for private R&D? A review of the econometric evidence.[J].Paul A. David;Bronwyn H. Hall;Andrew A. Toole.Research Policy.2000, 4
[3]
Is public R&D a complement or substitute for private R&D? A review of the econometric evidence.[J].Paul A. David;Bronwyn H. Hall;Andrew A. Toole.Research Policy.2000, 4