Abowd G. D., Dey A. K., Brown P. J., Davies N., Smith M. & Steggles P. 1999. Towards a better understanding of context and context-awareness. In Handheld and Ubiquitous Computing, Gellersen, H.-W., (ed.). Springer Berlin, 304–307.

Adomavicius G. & Tuzhilin A. 2005. Toward the next generation of recommender systems: a survey of the state-of-the-art and possible extensions. IEEE Transactions on Knowledge and Data Engineering 17(6), 734–749.

Adomavicius G. & Tuzhilin A. 2015. Context-Aware Recommender Systems. Springer, 191–226.

Albu C.-E. 2013. Stereotypical factors in tourism. Cross-Cultural Management Journal (3), 5–13.

Amatriain X. 2013. Mining large streams of user data for personalized recommendations’. SIGKDD Explorotions Newsletter 14(2), 37–48.

Anacleto R., Figueiredo L., Luz N., Almeida A. & Novais P. 2011. Recommendation and planning through mobile devices in tourism context. In Ambient Intelligence – Software and Applications, Novais, P., Preuveneers, D. & Corchado, J. M. (eds). Springer Berlin, 133–140.

Ashley-Dejo E., Ngwira S. M. & Zuva T. 2016. A context-aware proactive recommender system for tourist. In 2016 International Conference on Advances in Computing and Communication Engineering (ICACCE), 271–275.

Bahramian Z., Ali Abbaspour R. & Claramunt C. 2017. A cold start context-aware recommender system for tour planning using artificial neural network and case based reasoning. In Mobile Information Systems 2017.

Baltrunas L., Ludwig B., Peer S. & Ricci F. 2011. Context-aware places of interest recommendations for mobile users. In International Conference of Design, User Experience, and Usability, 531–540. Springer.

Barragáns-Martínez A. B. & Costa-Montenegro E. 2015. Adding personalization and social features to a context-aware application for mobile tourism. In Hospitality, Travel, and Tourism: Concepts, Methodologies, Tools and Applications. IGI Global, 467–480.

Batet M., Moreno A., Sánchez D., Isern D. & Valls A. 2012. Turist@: agent-based personalised recommendation of tourist activities. Expert Systems with Applications 39(8), 7319–7329.

Borras J., Moreno A. & Valls A. 2014. Intelligent tourism recommender systems: a survey. Expert Systems with Applications 41(16), 7370–7389.

Braunhofer M., Elahi M. & Ricci F. 2014. Techniques for cold-starting context-aware mobile recommender systems for tourism. Intelligenza Artificiale 8(2), 129–143.

Brewster C. & O’Hara K. 2004. Knowledge representation with ontologies: the present and future. IEEE Intelligent Systems 19(1), 72–81.

Bruyneel K. & Malheiro B. 2014. Erasmusapp: a location-based collaborative system for erasmus students. In ECUMICT 2014, 35–47. Springer.

Burke R. 2002. Hybrid recommender systems: Survey and experiments. User Modeling and User-Adapted Interaction 12(4), 331–370.

Cárcel G. H., Campo A., Gil M., Garcia A., Martin D., Zugasti I., Bilbao S., Perez A., Koshutanski H., Maña A. & De Albeniz I. P., 2012. ConTur: an intelligent content management system for the tourism sector. In Information and Communication Technologies in Tourism, Fuchs, M., Ricci, F. & Cantoni, L. (eds). Springer.

Castillo L., Armengol E., Onaindía E., Sebastiá L., González-Boticario J., Rodríguez A., Fernández S., Arias J. D. & Borrajo D. 2008. Samap: An user-oriented adaptive system for planning tourist visits. Expert Systems with Applications 34(2), 1318–1332.

Ceccaroni L., Codina V., Palau M. & Pous M. 2009. Patac: Urban, ubiquitous, personalized services for citizens and tourists. In Third International Conference on Digital Society, 2009. ICDS’09, 7–12. IEEE.

Chen G. & Kotz D. 2000. A Survey of Context-Aware Mobile Computing Research. Technical Report TR2000-381, Department of Computer Science, Dartmouth College.

Colomo-Palacios R., García-Peñalvo F. J., Stantchev V. & Misra S. 2017. Towards a social and context-aware mobile recommendation system for tourism, Pervasive and Mobile Computing 38, 505–515. In Special Issue IEEE International Conference on Pervasive Computing and Communications (PerCom) 2016, http://www.sciencedirect.com/science/article/pii/S1574119216000407.

de la Flor J., Borràs J., Isern D., Valls A., Moreno A., Russo A., Pérez Y. & Anton-Clavé S. 2012. Semantic enrichment for geospatial information in a tourism recommender system. In Discovery of Geospatial Resources: Methodologies, Technologies, and Emergent Applications, 133–155. IGI Global.

Dell’Erba M., Fodor O., Ricci F. & Werthner H. 2003. Harmonise: a solution for data interoperability. In Towards the Knowledge Society, 433–445. Springer.

Dey A. K. 2001. Understanding and using context. Personal and Ubiquitous Computing 5(1), 4–7.

Gama J. 2010. Knowledge Discovery from Data Streams. CRC Press.

Garcia A., Torre I. & Linaza M. T. 2013. Mobile social travel recommender system. In Information and Communication Technologies in Tourism 2014, 3–16. Springer.

García-Crespo A., Chamizo J., Rivera I., Mencke M., Colomo-Palacios R. & Gómez-Berbís J. M. 2009. Speta: social pervasive e-tourism advisor. Telematics and Informatics 26(3), 306–315.

Gavalas D., Konstantopoulos C., Mastakas K. & Pantziou G. 2014. Mobile recommender systems in tourism. Journal of Network and Computer Applications 39, 319–333.

Grimm S. 2010. Knowledge representation and ontologies. In Scientific Data Mining and Knowledge Discovery.

Gula I. 2013. Crowdsourcing in the tourism industry—using the example of ideas competitions in tourism destinations. In ISCONTOUR 2013: Proceedings of the International Student Conference in Tourism Research, 147. BoD-Books on Demand.

Han J. & Ding B. 2009. Stream Mining. Springer, 2831–2834.

Herath H. & Ratnayake H. 2013. Multi agent system for trip planning. In 2013 8th International Conference on Computer Science & Education (ICCSE), 298–303. IEEE.

Hildebrandt M. 2006. Profiling: from data to knowledge. Datenschutz und Datensicherheit-DuD 30(9), 548–552.

Hildebrandt M. 2008. Defining profiling: a new type of knowledge? In Profiling the European citizen, 17–45. Springer.

Howe J. 2006. The rise of crowdsourcing. Wired Magazine 14(6), 1–4.

Hung J. C., Hsu V. & Wang Y.-B. 2011. A smart-travel system based on social network service for cloud environment. In 2011 Third International Conference on Intelligent Networking and Collaborative Systems (INCoS), 514–519. IEEE.

Jøsang A., Ismail R. & Boyd C. 2007. A survey of trust and reputation systems for online service provision. Decision Support Systems 43(2), 618–644.

Kashevnik A. M., Ponomarev A. V. & Smirnov A. V. 2017. A multimodel context-aware tourism recommendation service: approach and architecture. Journal of Computer and Systems Sciences International 56(2), 245–258.

Kingston J. K. 1998. Designing knowledge based systems: the commonkads design model. Knowledge-Based Systems 11(5), 311–319.

Kiryakov A., Popov B., Terziev I., Manov D. & Ognyanoff D. 2004. Semantic annotation, indexing, and retrieval. Web Semantics: Science, Services and Agents on the World Wide Web 2(1), 49–79.

Legrand B. 2004. Semantic web methodologies and tools for intra-European sustainable tourism, White paper, Mondeca.

Li X., Eckert M., Martinez J.-F. & Rubio G. 2015. Context aware middleware architectures: survey and challenges. Sensors 15(8), 20570–20607.

Luz N., Anacleto R. & Almeida A. 2010. Tourism mobile and recommendation systems-a state of the art. In Proceedings of the 2010 International Conference on E-Learning, E-Business, Enterprise Information Systems, & E-Government (EEE2010), 277–283. CSREA EEE.

Martin D., Alzua A. & Lamsfus C. 2011. A contextual geofencing mobile tourism service. In ENTER, 191–202.

Meehan K., Lunney T., Curran K. & McCaughey A. 2013. Context-aware intelligent recommendation system for tourism. In 2013 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops), 328–331. IEEE.

Middleton S. E., Shadbolt N. R. & De Roure D. C. 2004. Ontological user profiling in recommender systems. ACM Transactions on Information Systems (TOIS) 22(1), 54–88.

Missikoff M. & Taglino F. 2004. An ontology-based platform for semantic interoperability. In Handbook on Ontologies. International Handbooks on Information Systems, Staab, S. & Studer, R. (eds). Springer, 617–633.

Musumba G. W. & Nyongesa H. O. 2013. Context awareness in mobile computing: a review. International Journal of Machine Learning and Applications 2(1), 5.

Najafian S., Wörndl W. & Braunhofer M. 2016. Context-aware user interaction for mobile recommender systems. In Late-breaking Results, Posters, Demos, Doctoral Consortium and Workshops Proceedings of the 24th ACM Conference on User Modeling, Adaptation and Personalisation (UMAP 2016), Halifax, July 13–16.

Noguera J. M., Barranco M. J., Segura R. J. & MartíNez L. 2012. A mobile 3d-gis hybrid recommender system for tourism’. Information Sciences 215, 37–52.

Ou S., Pekar V., Orasan C., Spurk C. & Negri M. 2008. Development and alignment of a domain-specific ontology for question answering. In LREC.

Panahi M. S., Woods P. & Thwaites H. 2013. Designing and developing a location-based mobile tourism application by using cloud-based platform. In 2013 International Conference on Technology, Informatics, Management, Engineering, and Environment (TIME-E), 151–156. IEEE.

Poveda Villalon M., Suàrez-Figueroa M. C., García-Castro R. & Gómez-Pérez A. 2010. A context ontology for mobile environments. In Proceedings of the Second Workshop on Context, Information and Ontologies

Prantner K. 2004. Ontour: The ontology, Deri Insbruck.

Prantner K., Ding Y., Luger M., Yan Z. & Herzog C. 2007. Tourism ontology and semantic management system: state-of-the-arts analysis. In IADIS international conference WWW/Internet, 111–115.

Qureshi S. S., Ahmad T. & Rafique K. 2011. Mobile cloud computing as future for omobile applications-implementation methods and challenging issues. In 2011 IEEE International Conference on Cloud Computing and Intelligence Systems (CCIS), 467–471. IEEE.

Raento M., Oulasvirta A., Petit R. & Toivonen H. 2005. Contextphone: a prototyping platform for context-aware mobile applications. IEEE Pervasive Computing 4(2), 51–59.

Ren Y., Li G. & Zhou W. 2015. A survey of recommendation techniques based on offline data processing. Concurrency and Computation: Practice and Experience 27(15), 3915–3942.

Rodríguez J., Bravo M. & Guzmán R. 2012. Multi-dimensional ontology model to support context-aware systems. In International Conference on Internet and Web Applications and Services, 80–89.

Santiago F. M., López F. A., Montejo-Ráez A. & López A. U. 2012. Geoasis: a knowledge-based geo-referenced tourist assistant. Expert Systems with Applications 39(14), 11737–11745.

Sayed-Mouchaweh M. 2016. Learning from Data Streams in Dynamic Environments. Springer.

Schiaffino S. & Amandi A. 2009. Intelligent user profiling. In Artificial Intelligence An International Perspective, M. Bramer (ed.), Lecture Notes in Computer Science 5640, 193–216. Springer Berlin.

Sigala M. 2015. Gamification for crowdsourcing marketing practices: applications and benefits in tourism. In Advances in Crowdsourcing, 129–145. Springer.

Sigala M., Christou E. & Gretzel U. 2012. Social Media in Travel, Tourism and Hospitality: Theory, Practice and Cases. Ashgate Publishing Ltd.

Silva C. A., Toasa R., Guevara J., Martinez H. D. & Vargas J. 2018. Mobile application to encourage local tourism with context-aware computing. In Proceedings of the International Conference on Information Technology & Systems (ICITS 2018), Rocha, Á. & Guarda, T. (eds), 796–803. Springer International Publishing.

Siricharoen W. V. 2007. Using ontologies for e-tourism. In The 4th WSEAS/IASME International Conference on Engineering Education (EE 2007) Proceeding.

Smirnov A., Kashevnik A., Balandin S. I. & Laizane S. 2013. Intelligent mobile tourist guide. In Internet of Things, Smart Spaces, and Next Generation Networking, Balandin, S., Andreev, S. & Koucheryavy, Y. (eds). Springer Berlin, 94–106.

Stephan G. S., Pascal H. S. & Andreas A. S. 2007. Knowledge Representation and Ontologies. Springer.

Su X. & Khoshgoftaar T. M. 2009. A survey of collaborative filtering techniques. Advances in Artificial Intelligence 2009, 4.

Umanets A., Ferreira A. & Leite N. 2014. Guideme-a tourist guide with a recommender system and social interaction. Procedia Technology 17, 407–414.

Viktoratos I., Tsadiras A. & Bassiliades N. 2014. A rule-based service for context-aware point of interest exploration. In Proceedings of the CEUR Workshop.

Viktoratos I., Tsadiras A. & Bassiliades N. 2015. A context-aware web-mapping system for group-targeted offers using semantic technologies. Expert Systems with Applications 42(9), 4443–4459.

Wang D., Park S. & Fesenmaier D. R. 2012. The role of smartphones in mediating the touristic experience. Journal of Travel Research 51(4), 371–387.

Yang W.-S. & Hwang S.-Y. 2013. itravel: a recommender system in mobile peer-to-peer environment. Journal of Systems and Software 86(1), 12–20.