共 68 条
[4]
[Anonymous], 2000, HARVARD BUS REV, V78, P16
[5]
[Anonymous], 2011, OPEN SERVICES INNOVA
[6]
[Anonymous], 2001, IND CORP CHANGE
[7]
[Anonymous], 2003, Patents in the service industries: Final report
[8]
[Anonymous], 2000, W7552 NAT BUR EC RES, DOI DOI 10.3386/W7552
[10]
ARROW KJ, 1963, AM ECON REV, V53, P941