1. Buhalis, D., & Law, R. (2008). Progress in information technology and tourism management: 20 years on and 10 years after the internet—The state of eTourism research. Tourism Management, 29(4), 609–623.
2. Hall, C. M. (2010).Crisis events in tourism: Subjects of crisis in tourism. Current issues in Tourism, 13(5), 401–417.
3. Hauben, J. R. (2005). Vannevar Bush and JRC Licklider: Libraries of the future 1945–1965. The Amateur computerist (p. 36).
4. Jakkilinki, R., Sharda, N., & Ahmad, I. (2005). Ontology-based intelligent tourism information systems: An overview of development methodology and applications. In Proceeding of TES.
5. Laddha S. S., & Jawandhiya P. M. (2018) Onto semantic tourism information retrieval. International Journal of Engineering & Technology (UAE), 7(4.7), 148–151. ISSN 2227-524X,
https://doi.org/10.14419/ijet.v7i4.7.20532
.