Declarative Languages for Querying Portal Catalogs. - Vassilis Christophides; Dimitris Plexousakis; Gregory Karvounarakis; Sofia Alexaki (DELOS, 2000)

Managing RDF Metadata for Community Webs. - Sofia Alexaki; Vassilis Christophides; Gregory Karvounarakis; Dimitris Plexousakis; Karsten Tolle; Bernd Amann; Irini Fundulaki; Michel Scholl; Anne-Marie Vercoustre (ER (Workshops), 2000)

Querying RDF Descriptions for Community Web Portals. - Gregory Karvounarakis; Vassilis Christophides; Dimitris Plexousakis; Sofia Alexaki (BDA, 2001)

The ICS-FORTH RDFSuite: Managing Voluminous RDF Description Bases. - Sofia Alexaki; Vassilis Christophides; Gregory Karvounarakis; Dimitris Plexousakis; Karsten Tolle (SemWeb, 2001)

On Storing Voluminous RDF Descriptions: The Case of Web Portal Catalogs. - Sofia Alexaki; Vassilis Christophides; Gregory Karvounarakis; Dimitris Plexousakis (WebDB, 2001)

Benchmarking RDF Schemas for the Semantic Web. - Aimilia Magkanaraki; Sofia Alexaki; Vassilis Christophides; Dimitris Plexousakis (ISWC, 2002)

RQL: a declarative query language for RDF. - Gregory Karvounarakis; Sofia Alexaki; Vassilis Christophides; Dimitris Plexousakis; Michel Scholl (WWW, 2002)

Querying the Semantic Web with RQL. - Gregory Karvounarakis; Aimilia Magkanaraki; Sofia Alexaki; Vassilis Christophides; Dimitris Plexousakis; Michel Scholl; Karsten Tolle (Comput. Networks, 2003)

Blockchain-based Electronic Patient Records for Regulated Circular Healthcare Jurisdictions. - Sofia Alexaki; George Alexandris; Vasilis Katos; Nikolaos E. Petroulakis (CAMAD, 2018)

Blockchains as Enablers for Auditing Cooperative Circular Economy Networks. - George Alexandris; Vasilis Katos; Sofia Alexaki; George Hatzivasilis (CAMAD, 2018)

Pairing a Circular Economy and the 5G-Enabled Internet of Things: Creating a Class of ?Looping Smart Assets? - Andreas I. Miaoudakis; Konstantinos Fysarakis; Nikolaos E. Petroulakis; Sofia Alexaki; George Alexandirs; Sotiris Ioannidis; George Spanoudakis; Vasilis Katos; Christos V. Verikoukis (IEEE Veh. Technol. Mag., 2020)