共 26 条
[2]
[Anonymous], 2003, STAT RES
[4]
BOND S, 2002, CWP0902 CEMMAP I FIS
[8]
Feng Junxin, 2006, EC RES J, P44
[9]
Gao Lianshui, 2009, RES EC MANAGEMENT, P20
[10]
GRILICHES Z, 1986, AM ECON REV, V76, P141