共 7 条
[6]
Deregulation, technology imports and in-house R&D efforts: an analysis of the Indian experience[J] . Aradhna Aggarwal.Research Policy . 2000 (9)
[7]
Technological Opportunity and Spillovers of R & D: Evidence from Firms' Patents, Profits, and Market Value[J] . Adam B. Jaffe.The American Economic Review . 1986 (5)