共 9 条
[6]
Patent Protection, Market Uncertainty, and R&D Investment[J] . Dirk Czarnitzki,Andrew A. Toole.The Review of Economics and Statistics . 2011 (1)
[7]
Product innovation and the decision to invest in fixed capital assets: Evidence from an SME survey in six European Union member states[J] . Dimitris Skuras,Kyriaki Tsegenidi,Kostas Tsekouras.Research Policy . 2008 (10)
[9]
Determinants of innovation behaviour and investment estimates for west-german manufacturing firms[J] . Werner Smolny.Economics of Innovation and New Technology . 2003 (5)