1[4]Vourch A and Denmann R.Tourism and local agenda 21--the role of local authorities in sustainable tourism[M].New York:Janine Tabasaran and Oliver Hillel (UNEP), 2003. 11.
2Heath, E., Geoffrey Wall, Marketing Tourism Destination [ Z ].1991 ,John Wiley&Sons.
3Morrell, P."Airline sales and distribution channels: the impact of new technology" [J]. Tourism Economics, 1998,4( 1 ): 5 - 19.
4Opperman, M." Using database marketing in the tourism industrygaining competitive advantage"[J]. Turizam, 1997,45(1 - 9): 13- 28.