Cheng, Leonard K; Tao, Zhigang - In: International Economic Review 40 (1999) 1, pp. 187-207
It has been shown under the assumption of linear R&D technology that a government subsidy to imitative (innovative) R&D decreases (increases) imitative effort but increases (decreases) innovative effort, and that strengthening the enforcement of patent laws leads to a decrease in innovative R&D...