共 21 条
[1]
Alderighi M., 2004, 20040743 TI
[3]
Button K., 1998, FLYING FUTURE AIR TR
[7]
Dresner M, 1996, J TRANSP ECON POLICY, V30, P309
[8]
ECKERT A, 2006, ADV AIRLINE EC COMPE, V1, P25