共 9 条
[1]
*AM EXPR, 1999, CORP TRAV BAR
[2]
[Anonymous], J AIR TRANSPORTATION
[3]
Civil Aviation Authority, 1998, 685 CAP
[4]
*COMP BARCL, 1999, 1998 1999 TRAV BUS S
[5]
*GO FLY LTD, 1999, ROOM ALL REP LOW COS
[6]
HAJIIOANNOU S, 1999, QUOTED AIR WARS MATT
[7]
Mason K. J., 2000, Journal of Transport Geography, V8, P107, DOI 10.1016/S0966-6923(99)00032-0
[8]
MASON KJ, 1995, THESIS U PLYMOUTH
[9]
MCWHIRTER A, 2000, BUSINESS TRAVEL 0624