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Conference Paper
Lepouras G, Vassilakis C, Weir G.R.S..  2002.  Serving Enhanced Hypermedia Information. Proceedings of the 24th BCS-IRSG European Colloquium on IR Research. :86–92.
Tambouris E., Boukis G., Vassilakis C, Lepouras G, Rouvas S., Canadas R., Heredia S., Usero J.CLopez.  2002.  SMARTGOV: A Governmental Knowledge-based Platform for Public Sector Online Services. Proceedings KMGov2002. :173–185.
Georgiadis P., Lepouras G, Vassilakis C, Boukis G., Tambouris E., Gorilas S., Davenport E., Macintosh A., Fraser J., Lochhead D..  2002.  SmartGov: A Knowledge-Based Platform for Transactional Electronic Services. Lecture Notes in Computer Science. :362-369.
Margaris D, Spiliotopoulos D, Vassilakis C.  2019.  Social Relations versus Near Neighbours: Reliable Recommenders in Limited Information Social Network Collaborative Filtering for Online Advertising. Proceedings of the 2019 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2019).
Benou P, Vassilakis C.  2011.  A Software Architecture for Provision of Context-Aware Web-based m-Commerce Applications. Proceedings of the 11th IEEE International Conference on Computer and Information Technology (CIT 2011).
Akim NMd., Dix A, Katifori A, Lepouras G, Shabir N, Vassilakis C.  2011.  Spreading Activation for Web Scale Reasoning: Promise and Problems. WebSci 11, poster presentation. :1-4.
Katifori A, Torou E, Vassilakis C, Halatsis C..  2008.  Supporting research in historical archives: Historical information visualization and modeling requirements. Proceedings of the International Conference on Information Visualisation. :32-37.
Wallace M, Alexopoulos P, Papafragkos I, Vassilakis C.  2011.  Supporting User Roles in Ontology Fuzzification. Proceedings of the 6th International Workshop on Semantic media adaptation and personalization (SMAP).
Lepouras G, Sotiropoulou A, Theotokis D, Vassilakis C.  2004.  Tailorability in the context of E-government Information Systems: An approach. Proceedings of the IRMA 2004 conference.
Sotiropoulou A, Souillard M, Vassilakis C.  1998.  Temporal Extension to ODMG. IADT. :304-311.
Souillard M, Vassilakis C, Sotiropoulou A.  1998.  TOOBIS: Application de la gestion de données temporelles dans le domaine de la recherche clinique. INFORSID. :147-165.
Lepouras G, Katifori A, Vassilakis C, Antoniou A, Platis N.  2014.  Towards a Learning Analytics Platform for Supporting the Educational Process. Proceedings of the 5th Conference on Information, Intelligence, Systems & Application (IISA2014).
Kalikakis M., Gouscos D., Vassilakis C, Georgiadis P..  2007.  Towards a P2P world: peered taxation. Proceedings of the 2nd International Workshop "E-taxation: State & Perspectives".
Kareliotis C, Vassilakis C, Georgiadis P..  2006.  Towards Dynamic, Relevance-Driven Exception Resolution in Composite Web Services. Proceedings of OOPSLA 2006, Fourth International Workshop on SOA & Web Services Best Practices.
Vassilakis C, Lorentzos N., Georgiadis P..  1995.  Transaction Support in a Temporal DBMS. Proceedings of the International Workshop on Temporal Databases. :255–271.
Vassilakis C, Laskaridis G., Lepouras G, Rouvas S., Georgiadis P..  2002.  Transactional e-Government Services: An Integrated Approach. EGOV '02: Proceedings of the First International Conference on Electronic Government. :276–279.
Bampatzia S, Bravo-Quezada OGustavo, Antoniou A, Nores MLopez, Wallace M, Lepouras G, Vassilakis C.  2016.  The use of semantics in the CrossCult H2020 project. Proceedings of the second International KEYSTONE Conference, (IKC2016). :190–195.
Antoniou A, Lykourentzou I, Rompa J., Tobias E., Lepouras G, Vassilakis C, Naudet Y..  2013.  User Profiling: Towards a Facebook Game that Reveals Cognitive Style. Proceedings of the GALA 2013 conference. :349–353.
Spiliopoulou M., Hatzopoulos M., Vassilakis C.  1992.  Using Parallelism and Pipeline for the Optimisation of Join Queries. PARLE '92: Proceedings of the 4th International PARLE Conference on Parallel Architectures and Languages Europe. :279–294.
Bampatzia S, Antoniou A, Lepouras G, Vassilakis C, Wallace M.  2016.  Using Social media to stimulate history reflection in cultural heritage. Proceedings of Semantic and Social Media Adaptation and Personalization (SMAP) 2016.
Katifori A, Vassilakis C, Dix A.  2008.  Using Spreading Activation through Ontologies to Support Personal Information Management. Proceedings of CSKGOI, within IUI 2008.
Katifori A, Vassilakis C, Lepouras G, Halatsis C..  2014.  Visualization method effectiveness in ontology-based information retrieval tasks involving entity evolution. Proceedings of SMAP 2014.
Katifori A, Vassilakis C, Lepouras G, Daradimos I., Halatsis C..  2006.  Visualizing a temporally-enhanced ontology. AVI '06: Proceedings of the working conference on Advanced visual interfaces. :488–491.
Golemati M., Vassilakis C, Katifori A, Lepouras G, Halatsis C..  2009.  Visualizing Hierarchies: Evaluating the Efficiency and Cognitive Effects of Six Visualization Techniques for Browsing and Management Tasks. Information Visualization 2009, book of abstracts.
Vassilakis C, Lepouras G, Katifori A.  2007.  Web service execution streamlining. Proceedings - ICSSSM'06: 2006 International Conference on Service Systems and Service Management. 2:1564-1569.