共 6 条
- [4] Intellectual property rights and licensing: An econometric investigation[J] . Guifang Yang,Keith E. Maskus.Weltwirtschaftliches Archiv . 2001 (1)
- [5] Determinants of patent rights: A cross-national study[J] . Juan C. Ginarte,Walter G. Park.Research Policy . 1997 (3)
- [6] Technological Diffusion, Convergence, and Growth[J] . Robert J. Barro,Xavier Sala-i-Martin.Journal of Economic Growth . 1997 (1)