Realistic virtual environments navigable over the www. - Ioannis Giannopoulos; Ourania Hatzi; Mara Nikolaidou; Dimosthenis Anagnostopoulos (SCSC, 2007)

A cellular automata framework for studying expandable traffic flow models. - Ourania Hatzi; Stephanos Thomas; Vassilis Dalakas; Mara Nikolaidou; Dimosthenis Anagnostopoulos (SCSC, 2007)

A Synergy of Planning and Ontology Concept Ranking for Semantic Web Service Composition. - Ourania Hatzi; Georgios Meditskos; Dimitris Vrakas; Nick Bassiliades; Dimosthenis Anagnostopoulos; Ioannis P. Vlahavas (IBERAMIA, 2008)

Semantic Web Service Composition Using Planning and Ontology Concept Relevance. - Ourania Hatzi; Georgios Meditskos; Dimitris Vrakas; Nick Bassiliades; Dimosthenis Anagnostopoulos; Ioannis P. Vlahavas (Web Intelligence, 2009)

Σύνθεση διαδικτυακών υπηρεσιών μέσω σχεδιασμού ενεργειών - Ourania Hatzi (2009)

Semantic Awareness in Automated Web Service Composition through Planning. - Ourania Hatzi; Dimitris Vrakas; Nick Bassiliades; Dimosthenis Anagnostopoulos; Ioannis P. Vlahavas (SETN, 2010)

A visual programming system for automated problem solving. - Ourania Hatzi; Dimitris Vrakas; Nick Bassiliades; Dimosthenis Anagnostopoulos; Ioannis P. Vlahavas (Expert Syst. Appl., 2010)

Infusing Semantics in WSDL Web Service Descriptions to Enhance Service Composition and Discovery. - Ourania Hatzi; Mara Nikolaidou; Dimosthenis Anagnostopoulos (CLOSER, 2012)

Using Social Network Technology to Provide e-Administration Services as Collaborative Tasks. - Ourania Hatzi; Mara Nikolaidou; Panagiotis Katsivelis-Perakis; Valentino Hudhra; Dimosthenis Anagnostopoulos (EGOVIS/EDEM, 2012)

A Specialized Search Engine for Web Service Discovery. - Ourania Hatzi; Georgios Batistatos; Mara Nikolaidou; Dimosthenis Anagnostopoulos (ICWS, 2012)

An Integrated Approach to Automated Semantic Web Service Composition through Planning. - Ourania Hatzi; Dimitris Vrakas; Mara Nikolaidou; Nick Bassiliades; Dimosthenis Anagnostopoulos; Ioannis P. Vlahavas (IEEE Trans. Serv. Comput., 2012)

Enabling Workflow Composition Within a Social Network Environment. - Ourania Hatzi; Despina Topali; Mara Nikolaidou; Dimosthenis Anagnostopoulos (Business Process Management Workshops, 2013)

The PORSCE II framework: using AI planning for automated Semantic Web service composition. - Ourania Hatzi; Dimitris Vrakas; Nick Bassiliades; Dimosthenis Anagnostopoulos; Ioannis P. Vlahavas (Knowl. Eng. Rev., 2013)

Extending the Social Network Interaction Model to Facilitate Collaboration through Service Provision. - Ourania Hatzi; Giannis Meletakis; Panagiotis Katsivelis-Perakis; Andreas Kapouranis; Mara Nikolaidou; Dimosthenis Anagnostopoulos (BMMDS/EMMSAD, 2014)

An intelligent tool for expediting and automating data mining steps. - Ourania Hatzi; Nikolaos Zorbas; Mara Nikolaidou; Dimosthenis Anagnostopoulos (Panhellenic Conference on Informatics, 2014)

Collaborative management of applications in enterprise social networks. - Ourania Hatzi; Giannis Meletakis; Mara Nikolaidou; Dimosthenis Anagnostopoulos (RCIS, 2014)

Semantically Aware Web Service Composition Through AI Planning. - Ourania Hatzi; Mara Nikolaidou; Dimitris Vrakas; Nick Bassiliades; Dimosthenis Anagnostopoulos; Ioannis P. Vlahavas (Int. J. Artif. Intell. Tools, 2015)