共 20 条
[1]
GOLDBERG L, 1978, NOV M SO EC ASS
[2]
Griliches Z., 1984, R D PATENTS PRODUCTI, P339, DOI 10.7208/9780226308906-008
[3]
JAFFE SA, 1972, NSF72310 NAT SCI F
[4]
JOHNSON E, 1961, DEC IRE T ENG MAN
[5]
MANSFIELD E, 1985, PRICE INDEXES R D IN
[6]
MANSFIELD E, 1977, PRODUCTION APPLICATI
[7]
Mansfield E, 1982, TECHNOLOGY TRANSFER
[8]
MANSFIELD E, 1972, SCIENCE 0204
[9]
MANSFIELD E, 1983, RES POLICY APR, P105