Interoperability testing for e-government web services. - Giorgos Pentafronimos; Spyridon Papastergiou; Nineta Polemi (ICEGOV, 2008)

OPSIS: An Open, Preventive and Scalable Migration Information System. - Giorgos Pentafronimos; Thanos Karantjias; Nineta Polemi (e-Democracy, 2009)

IMP2.0 Migration Collaborative Platform and e-Services. - Nineta Polemi; Giorgos Pentafronimos; Theodoros Ntouskas (I3E, 2011)

Open issues on privacy and trust in collaborative environments. - Giorgos Pentafronimos; Athanasios Karantjias; Nineta Polemi (ISCC, 2011)

STORM - Collaborative Security Management Environment. - Theodoros Ntouskas; Giorgos Pentafronimos; Spyridon Papastergiou (WISTP, 2011)

Collaborative information and knowledge management environments: The 'what' and 'how'. - Giorgos Pentafronimos; Athanasios Karantjias; Nineta Polemi (OR Insight, 2012)

Έμπιστο περιβάλλον συνεργασίας και παροχής ασφαλών, ιδιωτικών και διαλειτουργικών υπηρεσιών - Giorgos Pentafronimos (2012)