1. Bloch, M. and Segev, A. (1996). The impact of electronic commerce on the travel industry.The Fisher Centre for Information Technology and Management, University of California.
http://groups.haas.berkeley.cdu/citm/publications/papers/wp-1017.html
/citm/publications/papers/wp-1017.html/[January 17 2001]).
2. Buhalis, D. (2000). Tourism and information technologies: past, present and future. Tourism Recreation Research 25(1), 41–58.
3. Dull, S. F. (2001). Customer Relationship Management: A breed apart. Accenture Outlook Journal 2001, No 2[November 30, 2001]
4. USATODAYcom;B Lollis De,2002
5. Economist. (2002). Business: Fit for DIY?; Travel Agents. The Economist. 1 June, 2002, 363 (8275), 63.