C. H. Marcussen, Trends in European Internet Distribution -of Travel and Tourism Services, 2009.

J. Fabre and S. Howard, Introduction to the Special Issue on Temporal Aspects of Usability, Interacting with Computers, vol.11, pp.1-7, 1998.

J. Nielsen, Designing Web Usability: The Practice of Simplicity, 2000.

D. Green and J. M. Pearson, Development of a Web site usability instrument based on ISO 9241-11, Journal of Computer Information Systems, vol.47, pp.66-72, 2006.

J. J. Cappel and Z. Huang, A Usability Analysis of Company Websites, Journal of Computer Information Systems, vol.48, pp.117-123, 2007.

H. Hu, J. Yen, and S. Guan, A Study on the Interface Usability of B2C Hypermarket Ecommerce Website, The 3rd IEEE Asia-Pacific Services Computing Conference, pp.1202-1207, 2008.

T. R. Lituchy and R. A. Barra, International issues of the design and usage of websites for e-commerce: Hotel and airline examples, Journal of Engineering and Technology Management, vol.25, issue.1-2, pp.93-111, 2008.
DOI : 10.1016/j.jengtecman.2008.01.004

S. Tucker, E???commerce standard user interface: an E???menu system, Industrial Management & Data Systems, vol.108, issue.8, pp.1009-1028, 2008.
DOI : 10.1108/02635570810904587

P. Selvidge, How Usable are the Airline Websites? Usability News 1, 1999.

E. Crichton and A. J. Frew, Usability of Information and Reservations Systems: Theory or Practice? Information and Communication Technologies in Tourism, pp.408-417, 2000.

C. Chariton and M. Choi, Enhancing usability of flight and fare search functions for airline and travel Web sites, International Conference on Information Technology: Coding and Computing, 2004. Proceedings. ITCC 2004., pp.320-325, 2004.
DOI : 10.1109/ITCC.2004.1286473

A. Malizia, Adding Flexibility to B2C Booking Systems Using a Virtual Intermediate Travel Agent, 2005 IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC'05), pp.337-338, 2005.
DOI : 10.1109/VLHCC.2005.16

Q. Zhou and R. Desantis, Usability Issues in City Tourism Website Design: A Content Analysis, 2005 IEEE International Professional Communication Conference Proceedings, pp.789-796, 2005.

M. Essawy, Testing the Usability of Hotel Websites: The Springboard for Customer Relationship Building, Information Technology & Tourism, vol.8, issue.1, pp.47-70, 2006.
DOI : 10.3727/109830506778193878

F. Grandi, Introducing an annotated bibliography on temporal and evolution aspects in the World Wide Web, ACM SIGMOD Record, vol.33, issue.2, 2003.
DOI : 10.1145/1024694.1024709

F. Grandi, Introducing an annotated bibliography on temporal and evolution aspects in the World Wide Web, ACM SIGMOD Record, vol.33, issue.2, pp.84-86, 2004.
DOI : 10.1145/1024694.1024709

G. Knolmayer, Endzeitstimmungen in einer hochtechnisierten Gesellschaft: Das Jahr 2000- Problem, seine Wahrnehmung und mögliche Konsequenzen, pp.13-26, 2004.

R. Law and R. Leung, A Study of Airlines' Online Reservation Services on the Internet, Journal of Travel Research, vol.39, issue.2, pp.202-211, 2000.
DOI : 10.1177/004728750003900210

R. Law, K. Leung, and N. Au, Evaluating Reservation Facilities for Hotels: A Study of Asian Based and North American Based Travel Web Sites, pp.303-310, 2002.
DOI : 10.3727/153373499819494740

A. Bainbridge, Hotel Date Entry: Design & Usability Report, Travel UCD, 2002.

D. Furniss, A. Blandford, and . Curzon, Usability Work in Professional Web Site Design: Insights from Practitioners' Perspectives, Maturing Usability: Quality in Software, Interaction and Value. Human-Computer Interaction Series, pp.144-167, 2008.

M. Fowler, Temporal Patterns, 2005.

S. Lennartz, Online Calendars and Date Pickers Smashing Magazine, 2007.

F. Zwicky, Morphological Astronomy. The Observatory 68, pp.121-143, 1948.

F. Zwicky, Discovery, Invention, Research Through the Morphological Approach, 1969.

G. F. Knolmayer and L. E. Helfenstein, Usability Aspects of Ensuring Temporal Integrity Constraints: A Critical Appraisal, Proceedings of the Fifth International Conference on Human-Computer Interaction, 2010.

B. Shneiderman and C. Plaisant, Designing the user interface strategies for effective human-computer interaction, ACM SIGBIO Newsletter, vol.9, issue.1, 2010.
DOI : 10.1145/25065.950626

J. Nielsen, Usability Engineering, 1993.

J. Hanna, Date & Time Formats on the Web

. Microsoft, Design Guidance -Date Display, Version 3, http://www.mscui.net/ DesignGuide/Pdfs/Design Guidance --Date Display.pdf, 2010.

S. L. Greene, J. D. Gould, S. J. Boies, A. Meluson, and M. Rasamny, Entry-based versus Selection-based Interaction Methods, Proceedings of the Human Factors Society -32nd Annual Meeting, pp.284-287, 1988.