Among all 97 papers, the top five papers with the highest citations per year were written
by Gretzel and Yoo (2008) titled “Use and impact of online travel reviews” with 19.80
citations per year; Zipf's (2002) “User-adaptive maps for location-based services (LBS) for
tourism” ranked second with 14.18 citations per year; O’Connor's (2008) “User-generated
content and travel: A case study on Tripadvisor.com” ranked third with 13.2 citations per
year; then Fesenmaier, Ricci, Schaumlechner, Wöber, and Zanella's (2003) “DIETORECS:
Travel advisory for multiple decision styles” has 7.2 citations per year ranked fourth; and
Yoo, Lee, Gretzel, and Fesenmaier's (2009) “Trust in travel-related consumer generated
media” ranked fifth with 4.25 citations per year. Among these five papers, three of them
were related to user generated content (UGC). Gretzel and Yoo (2008) have indicated that
consumers in different genders and ages had different usage patterns on UGC, but most of
them agreed UGC was influential in their travel planning. As UGC could influence users’
planning decision, O’Connor (2008) pointed out that false reviews might affect hotel
reputations. Hotels should thus respond to these false reviews but they rarely did that. Yoo
et al. (2009) have also coined the importance of the creditability of the online content. This
evidence reflected analysis of user generated content was a hot topic in ICT in tourism for
the past five years. The remaining two papers focused on location-based services and
recommender systems. Although these two papers were published a decade ago, Zipf (2002)
is still frequently acknowledged and cited by subsequent scholars indicating mobile location-
based marketing was still a hot topic in tourism. It is surprising that some papers that were
published in recent years also received a high citation number. A conceptual paper about
mobile tourism services (Martin, Alzua, & Lamsfus, 2011) has already received three
citations and ranked 93 among the top cited papers.
Figure 3 - Yearly distribution of top cited ENTER papers
Technology has been evolving constantly and rapidly. Hence, authors of technology-
related research papers generally cite the most recently published works. As shown in Fig. 3,
over 90% of the papers of the top cited papers were published within a decade, and around
58% were published within five years. However, there were still some evergreen topics
found in the top cited papers. The long lasting ENTER paper with high citations per year
was a conceptual paper published by Werthner (1996) titled “Design Principles of Tourist
Information Systems”. It ranked 94 with 1.47 citations per year. Though this paper was
published 17 years ago, the concepts and knowledge were still applicable to present
technology structure. Other than this, four papers which were published before 2000,
focusing on online information search (Beirne & Curry, 1999); destination marketing system
strategies (Frew & O’Connor, 1999); cost and benefits of small and medium enterprises
using IT (Buhalis, 1999); and how tourist’s online behavior affect business performance
(Dellaert, 1999), have also received a relatively higher number of citation per year. Even
though technologies change fast, all of them were still evergreen topics.
Total no. of papers = 97