共 37 条
[1]
[Anonymous], 1935, Q J ECON, V49, P454
[2]
[Anonymous], 2004, OECD STI WORKING PAP
[3]
[Anonymous], SCI TECHNOLOGY IND R
[6]
The quality factor in patent systems
[J].
INDUSTRIAL AND CORPORATE CHANGE,
2011, 20 (06)
:1755-1793