共 34 条
[2]
Afuah A., 1998, INNOVATION MANAGEMEN
[3]
[Anonymous], NBER WORKING PAPERS
[4]
Bound J., 1984, R D PATENTS PRODUCTI, V1st ed., P21
[5]
COHEN W, 1995, HDB EC INNOVATION TE, pCH6
[9]
COOPER AC, 1964, HARVARD BUS REV, V42, P75