Vasilios A. Siris

174 papers A* 3A 1B 20C 23Misc 5Journal 65Unranked 53
YearRankTypeTitle / Venue / Authors
2026 J jnl
CoRR
Konstantinos V. Katsaros, Adamantia Stamou, George D. Stamoulis, Vasilios A. Siris
2026 J jnl
CoRR
Tooba Qasim, Vasilios A. Siris, Izak Oosthuizen, Muttukrishnan Rajarajan, Sujit Biswas
2026 J jnl
CoRR
Konstantinos Varsos, Adamantia Stamou, George D. Stamoulis, Vasilios A. Siris
2025 Misc conf
ICIN
Nikos Fotiou, Vasilios A. Siris, George C. Polyzos
2025 J jnl
CoRR
Nikos Fotiou, Vasilios A. Siris, George C. Polyzos
2025 conf
MECC@EuroSys
Chalima Dimitra Nassar Kyriakidou, Athanasia Maria Papathanasiou, Vasilios A. Siris, Nikos Fotiou, George C. Polyzos, Eduardo Cánovas Martínez, Antonio F. Skarmeta
2025 J jnl
CoRR
Chalima Dimitra Nassar Kyriakidou, Athanasia Maria Papathanasiou, Vasilios A. Siris, Nikos Fotiou, George C. Polyzos, Eduardo Cánovas Martínez, Antonio F. Skarmeta
2025 B conf
IJCB
Tooba Qasim, Vasilios A. Siris, Izak Oosthuizen, Muttukrishnan Rajarajan, Sujit Biswas
2025 Misc conf
CSR
Nikos Fotiou, Lefteris Georgiadis, George C. Polyzos, Vasilios A. Siris
2025 conf
EuCNC/6G Summit
Ljupco Jorguseski, Rudolf Susnik, Luka Korsic, Janez Sterle, Sripriya Srikant Adhatarao, Artur Hecker, Zoran Despotovic, Adamantia Stamou, Vasilios A. Siris, George D. Stamoulis, Panagiotis Kontopoulos, Theodora Panagea
2025 conf
TDI
Nikos Fotiou, George C. Polyzos, Vasilios A. Siris
2025 J jnl
CoRR
Nikos Fotiou, George C. Polyzos, Vasilios A. Siris
2024 conf
CAMAD
Dionisios D. Damasiotis, Vasilios A. Siris
2023 B conf
TrustCom
Nikos Fotiou, Spiros Chadoulos, Iordanis Koutsopoulos, Vasilios A. Siris, George C. Polyzos
2023 J jnl
Comput. Networks
Nikos Fotiou, Yannis Thomas, Vasilios A. Siris, George Xylomenos, George C. Polyzos
2022 conf
CSCN
Nikos Fotiou, Yannis Thomas, George Xylomenos, Vasilios A. Siris, George C. Polyzos
2022 conf
ETAA
Nikos Fotiou, Iakovos Pittaras, Spiros Chadoulos, Vasilios A. Siris, George C. Polyzos, Nikolaos Ipiotis, Stratos Keranidis
2022 J jnl
CoRR
Nikos Fotiou, Iakovos Pittaras, Spiros Chadoulos, Vasilios A. Siris, George C. Polyzos, Nikolaos Ipiotis, Stratos Keranidis
2022 conf
SP (Workshops)
Nikos Fotiou, Vasilios A. Siris, George C. Polyzos, Yki Kortesniemi, Dmitrij Lagutin
2022 conf
Open Identity Summit
Nikos Fotiou, Evgenia Faltaka, Vasilis Kalos, Anna S. Kefala, Iakovos Pittaras, Vasilios A. Siris, George C. Polyzos
2022 J jnl
Future Internet
Nikos Fotiou, Vasilios A. Siris, George Xylomenos, George C. Polyzos
2022 C conf
ISCC
Iakovos Pittaras, Nikos Fotiou, Christos Karapapas, Vasilios A. Siris, George C. Polyzos
2022 conf
GIIS
Nikos Fotiou, Vasilis Kalos, Yannis Thomas, George Xylomenos, Vasilios A. Siris, George C. Polyzos
2021 J jnl
Sensors
Iakovos Pittaras, Nikos Fotiou, Vasilios A. Siris, George C. Polyzos
2021 B conf
ICCCN
Nikos Fotiou, Vasilios A. Siris, George C. Polyzos
2021 J jnl
CoRR
Nikos Fotiou, Vasilios A. Siris, George C. Polyzos
2021 B conf
Networking
Nikos Fotiou, Vasilios A. Siris, George C. Polyzos
2021 J jnl
CoRR
Nikos Fotiou, Vasilios A. Siris, George C. Polyzos
2021 C conf
HPSR
Nikos Fotiou, Yannis Thomas, Vasilios A. Siris, George Xylomenos, George C. Polyzos
2020 J jnl
IEEE Internet Comput.
Ricardo Neisse, José Luis Hernández-Ramos, Sara Nieves Matheu-García, Gianmarco Baldini, Antonio F. Skarmeta, Vasilios A. Siris, Dmitrij Lagutin, Pekka Nikander
2020 conf
GIoTS
Vasilios A. Siris, Michalis Tsenos, Dimitrios Dimopoulos, Nikos Fotiou, George C. Polyzos
2020 J jnl
Comput. Commun.
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
2020 conf
EuCNC
Spyros Voulgaris, Nikos Fotiou, Vasilios A. Siris, George C. Polyzos, Artemios Tomaras, Sotiris Karachontzitis
2020 J jnl
CoRR
Nikos Fotiou, Iakovos Pittaras, Vasilios A. Siris, Spyros Voulgaris, George C. Polyzos
2020 J jnl
Comput. Networks
Vasilios A. Siris
2020 J jnl
Pervasive Mob. Comput.
Vasilios A. Siris, Salil S. Kanhere
2019 J jnl
Future Internet
Spyros Voulgaris, Nikos Fotiou, Vasilios A. Siris, George C. Polyzos, Mikael Jaatinen, Yannis Oikonomidis
2019 conf
IoT S&P@CCS
Nikos Fotiou, Iakovos Pittaras, Vasilios A. Siris, George C. Polyzos
2019 J jnl
CoRR
Nikos Fotiou, Iakovos Pittaras, Vasilios A. Siris, George C. Polyzos
2019 B conf
GLOBECOM
Nikos Fotiou, Vasilios A. Siris, Mario Marchese, Franco Davoli, Luca Boero, George C. Polyzos
2019 J jnl
CoRR
Nikos Fotiou, Vasilios A. Siris, George C. Polyzos, Mario Marchese, Franco Davoli, Luca Boero
2019 J jnl
CoRR
Nikos Fotiou, Vasilios A. Siris, George C. Polyzos
2019 J jnl
IEEE Access
Vasilios A. Siris, Pekka Nikander, Spyros Voulgaris, Nikos Fotiou, Dmitrij Lagutin, George C. Polyzos
2019 conf
INFOCOM Workshops
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
2019 J jnl
CoRR
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
2019 conf
GIoTS
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
2019 conf
WF-IoT
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
2019 J jnl
CoRR
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
2019 C conf
WOWMOM
Nikos Fotiou, Iakovos Pittaras, Vasilios A. Siris, Spyros Voulgaris, George C. Polyzos
2019 J jnl
CoRR
Nikos Fotiou, Iakovos Pittaras, Vasilios A. Siris, Spyros Voulgaris, George C. Polyzos
2019 J jnl
J. Reliab. Intell. Environ.
Vasilios A. Siris, Nikos Fotiou, Alexandros Mertzianis, George C. Polyzos
2019 ch.
Security and Privacy in the Internet of Things
Dmitrij Lagutin, Priit Anton, Francesco Bellesini, Tommaso Bragatto, Alessio Cavadenti, Vincenzo Croce, Nikos Fotiou, Margus Haavala, Yki Kortesniemi, Helen C. Leligou, Ahsan Manzoor, Yannis Oikonomidis, George C. Polyzos, Giuseppe Raveduto, Francesca Santori, Vasilios A. Siris, Panagiotis Trakadas, Matteo Verber
2019 C conf
WOWMOM
Vasilios A. Siris, Dimitrios Dimopoulos, Nikos Fotiou, Spyros Voulgaris, George C. Polyzos
2018 conf
GIIS
Esmerald Aliaj, Georgia Dimaki, Petros Getsopoulos, Yannis Thomas, Nikos Fotiou, Stavros Toumpis, Iordanis Koutsopoulos, Vasilios A. Siris, George C. Polyzos
2018 ch.
Autonomous Control for a Reliable Internet of Services
Florian Metzger, Tobias Hoßfeld, Lea Skorin-Kapov, Yoram Haddad, Eirini Liotou, Peter Pocta, Hugh Melvin, Vasilios A. Siris, Andrej Zgank, Michael Jarschel
2018 conf
WiNTECH
Esmerald Aliaj, Georgia Dimaki, Petros Getsopoulos, Yannis Thomas, Nikos Fotiou, Stavros Toumpis, Vasilios A. Siris, Iordanis Koutsopoulos, George C. Polyzos
2018 conf
SpaCCS
Nikos Fotiou, Vasilios A. Siris, George C. Polyzos
2018 J jnl
CoRR
Miguel Ángel Vázquez, Ana I. Pérez-Neira, Carlos Mosquera, Bhavani Shankar, Pol Henarejos, Athanasios D. Panagopoulos, Giovanni Giambene, Vasilios A. Siris, George C. Polyzos, Nader Alagha
2018 C conf
WOWMOM
Nikos Fotiou, Vasilios A. Siris, Alexandros Mertzianis, George C. Polyzos
2017 B conf
Networking
Nikos Fotiou, Vasilios A. Siris, George Xylomenos, George C. Polyzos, Konstantinos V. Katsaros, George P. Petropoulos
2017 J jnl
CoRR
Nikos Fotiou, Vasilios A. Siris, George Xylomenos, George C. Polyzos, Konstantinos V. Katsaros, George P. Petropoulos
2017 conf
MECOMM@SIGCOMM
Xenofon Vasilakos, Mohammed Al-Khalidi, Vasilios A. Siris, Martin J. Reed, Nikolaos Thomos, George C. Polyzos
2017 J jnl
Found. Trends Netw.
Tomaso de Cola, Alberto Ginesi, Giovanni Giambene, George C. Polyzos, Vasilios A. Siris, Nikos Fotiou, Yiannis Thomas
2017 conf
MobiArch
Vasilios A. Siris
2016 J jnl
EAI Endorsed Trans. Cloud Syst.
Xenofon Vasilakos, Vasilios A. Siris
2016 J jnl
Comput. Networks
Xenofon Vasilakos, Vasilios A. Siris, George C. Polyzos
2016 C conf
WoWMoM
Vasilios A. Siris, Xenofon Vasilakos, Dimitrios Dimopoulos
2016 J jnl
EAI Endorsed Trans. Cloud Syst.
George C. Polyzos, Vasilios A. Siris, George Xylomenos, Giannis F. Marias, Stavros Toumpis
2016 conf
MobiArch
Vasilios A. Siris, Dimitrios Dimopoulos
2016 conf
NTMS
Vasilios A. Siris, Yannis Thomas, George C. Polyzos
2015 J jnl
Wirel. Commun. Mob. Comput.
Alexandros G. Fragkiadakis, Vasilios A. Siris, Nikolaos E. Petroulakis, Apostolos Traganitis
2015 B conf
IM
Tobias Hoßfeld, Lea Skorin-Kapov, Yoram Haddad, Peter Pocta, Vasilios A. Siris, Andrej Zgank, Hugh Melvin
2015 conf
EuCNC
Vasilios A. Siris, Nikos Fotiou, Dimitris Dimopoulos, George C. Polyzos
2015 conf
MobiArch
Vasilios A. Siris, Dimitrios Dimopoulos
2015 C conf
WOWMOM
Vasilios A. Siris, Dimitris Dimopoulos
2015 J jnl
Comput. Commun.
Manolis Ploumidis, Nikolaos Pappas, Vasilios A. Siris, Apostolos Traganitis
2015 conf
ISWCS
Miguel Ángel Vázquez, Ana I. Pérez-Neira, Carlos Mosquera, Bhavani Shankar, Pol Henarejos, Athanasios D. Panagopoulos, Giovanni Giambene, Vasilios A. Siris, George C. Polyzos, Nader Alagha
2014 J jnl
IEEE Commun. Surv. Tutorials
George Xylomenos, Christopher N. Ververidis, Vasilios A. Siris, Nikos Fotiou, Christos Tsilopoulos, Xenofon Vasilakos, Konstantinos V. Katsaros, George C. Polyzos
2014 C conf
QSHINE
Xenofon Vasilakos, Vasilios A. Siris
2014 conf
ASMS/SPSC
Adam Kapovits, Stefan Covaci, Christopher N. Ververidis, Vasilios A. Siris, Maria Guta
2014 J jnl
CoRR
Vasilios A. Siris, Xenofon Vasilakos, George C. Polyzos
2014 C conf
WoWMoM
Vasilios A. Siris, Xenofon Vasilakos, George C. Polyzos
2014 C conf
QSHINE
George C. Polyzos, Vasilios A. Siris, George Xylomenos, Giannis F. Marias, Stavros Toumpis
2014 ch.
Wireless Networking for Moving Objects
Carlos Anastasiades, Torsten Braun, Vasilios A. Siris
2014 conf
PerCom Workshops
Vasilios A. Siris, Konstantinos Balampekos, Mahesh K. Marina
2014 Misc conf
TRIDENTCOM
Dimitris Dimopoulos, Christos Boursinos, Vasilios A. Siris
2014 conf
ASMS/SPSC
Nikos Fotiou, Yiannis Thomas, Vasilios A. Siris, George C. Polyzos
2013 J jnl
CoRR
Vasilios A. Siris, Dimitrios Kalyvas
2013 J jnl
ACM SIGMOBILE Mob. Comput. Commun. Rev.
Vasilios A. Siris, Dimitrios Kalyvas
2013 conf
Future Network & Mobile Summit
Christopher N. Ververidis, Pantelis A. Frangoudis, Yannis Thomas, Vasilios A. Siris, George C. Polyzos, Ilias Andrikopoulos, Fabrice Arnal, Cédric Baudoin, Maria Guta
2013 C conf
MobiQuitous
Vasilios A. Siris, Maria Anagnostopoulou, Dimitris Dimopoulos
2013 J jnl
CoRR
Vasilios A. Siris, Maria Anagnostopoulou, Dimitris Dimopoulos
2013 J jnl
CoRR
Manolis Ploumidis, Nikolaos Pappas, Vasilios A. Siris, Apostolos Traganitis
2013 J jnl
CoRR
Vasilios A. Siris, Maria Anagnostopoulou
2013 C conf
WOWMOM
Vasilios A. Siris, Maria Anagnostopoulou
2013 Misc conf
SAC
Torsten Braun, Andreas Mauthe, Vasilios A. Siris
2013 J jnl
IEEE Commun. Surv. Tutorials
Elias Z. Tragos, Sherali Zeadally, Alexandros G. Fragkiadakis, Vasilios A. Siris
2013 conf
Future Network & Mobile Summit
Vasilios A. Siris, Christopher N. Ververidis, George C. Polyzos
2012 J jnl
IEEE Commun. Mag.
George Xylomenos, Xenofon Vasilakos, Christos Tsilopoulos, Vasilios A. Siris, George C. Polyzos
2012 conf
MobiArch
Vasilios A. Siris, Dimitrios Kalyvas
2012 conf
CAMAD
Manolis Ploumidis, Nikolaos Pappas, Vasilios A. Siris, Apostolos Traganitis
2012 J jnl
IEEE Commun. Mag.
Vasilios A. Siris, Elias Z. Tragos, Nikos Petroulakis
2012 J jnl
IEEE Trans. Mob. Comput.
Xenofon Fafoutis, Vasilios A. Siris
2012 conf
ICN
Xenofon Vasilakos, Vasilios A. Siris, George C. Polyzos, Marios Pomonis
2011 J jnl
EURASIP J. Wirel. Commun. Netw.
Ioannis G. Askoxylakis, Theodore Tryfonas, John May, Vasilios A. Siris, Apostolos Traganitis
2011 J jnl
IEEE Commun. Lett.
Vasilios A. Siris, George Stamatakis, Elias Z. Tragos
2011 J jnl
IEEE Commun. Mag.
Vangelis Angelakis, Stefanos Papadakis, Vasilios A. Siris, Apostolos Traganitis
2011 conf
WWIC
Vasilios A. Siris, George Stamatakis, Elias Z. Tragos
2011 J jnl
Comput. Commun.
Vasilios A. Siris, Manolis Delakis
2011 C conf
WOWMOM
Raffaele Bruno, Vasilios A. Siris
2011 C conf
ISCC
Elias Z. Tragos, Alexandros G. Fragkiadakis, Ioannis G. Askoxylakis, Vasilios A. Siris
2010 conf
PE-WASUN
Niki Gazoni, Vangelis Angelakis, Vasilios A. Siris, Raffaele Bruno
2010 conf
WWIC
Alexandros G. Fragkiadakis, Vasilios A. Siris, Nikos Petroulakis
2010 B conf
PIMRC
Elias Z. Tragos, Raffaele Bruno, Emilio Ancillotti, Krzysztof Grochla, Vasilios A. Siris
2010 conf
WMNC
Nikolaos Pappas, Vasilios A. Siris, Apostolos Traganitis
2010 C conf
WOWMOM
Nikolaos Pappas, Vasilios A. Siris, Apostolos Traganitis
2010 J jnl
Wirel. Commun. Mob. Comput.
Ioannis G. Askoxylakis, Boldizsár Bencsáth, Levente Buttyán, László Dóra, Vasilios A. Siris, D. Szili, István Vajda
2010 C conf
WOWMOM
Theodoros Dionysiou, Vasilios A. Siris, George Stamatakis
2009 C conf
WOWMOM
Niki Gazoni, Vangelis Angelakis, Raffaele Bruno, Marco Conti, Vasilios A. Siris
2009 B conf
WCNC
Despina Triantafyllidou, Khaldoun Al Agha, Vasilios A. Siris
2009 C conf
WOWMOM
Nikos Petroulakis, Manolis Delakis, Manolis Genetzakis, Theodoros Dionysiou, Stefanos Papadakis, Vasilios A. Siris
2009 conf
WWIC
Xenofon Fafoutis, Vasilios A. Siris
2009 J jnl
ERCIM News
Vangelis Angelakis, Vasilios A. Siris, Apostolos Traganitis
2008 B conf
SECON
Manolis Genetzakis, Vasilios A. Siris
2008 B conf
WiOpt
Ioannis Z. Koukoutsidis, Vasilios A. Siris
2008 C conf
BROADNETS
Manolis Delakis, Vasilios A. Siris
2008 J jnl
ERCIM News
Vasilios A. Siris, Ioannis G. Askoxylakis, Marco Conti, Raffaele Bruno
2008 Misc conf
TRIDENTCOM
Manolis Delakis, Kostas Mathioudakis, Nikos Petroulakis, Vasilios A. Siris
2008 conf
Panhellenic Conference on Informatics
Nikos Petroulakis, Vasilios A. Siris
2008 B conf
WiOpt
Vangelis Angelakis, Nikos Kossifidis, Stefanos Papadakis, Vasilios A. Siris, Apostolos Traganitis
2008 ed.
WWIC
Jarmo Harju, Geert J. Heijenk, Peter Langendörfer, Vasilios A. Siris
2007 C conf
WOWMOM
Ioannis Z. Koukoutsidis, Vasilios A. Siris
2007 conf
Integrated Network Management
Vasilios A. Siris, Despina Evaggelatou
2007 conf
WiNTECH
Vangelis Angelakis, Manolis Genetzakis, Nikos Kossifidis, Kostas Mathioudakis, Manolis Ntelakis, Stefanos Papadakis, Nikos Petroulakis, Vasilios A. Siris
2007 B conf
Networking
Ioannis Z. Koukoutsidis, Vasilios A. Siris
2007 J jnl
J. Netw. Comput. Appl.
Vasilios A. Siris, Ilias Stavrakis
2007 J jnl
Wirel. Pers. Commun.
Vasilios A. Siris
2007 J jnl
Eur. Trans. Telecommun.
Vasilios A. Siris
2006 J jnl
Comput. Commun.
Vasilios A. Siris, Fotini Papagalou
2006 B conf
WCNC
Vasilios A. Siris, George Stamatakis
2006 J jnl
Comput. Commun.
Vasilios A. Siris, Harris M. Marinakis
2006 conf
ICC
Vasilios A. Siris, Georgios I. Fotiadis
2006 conf
WiNTECH
Vasilios A. Siris, George Stamatakis
2006 C conf
WOWMOM
Vasilios A. Siris, Costas Courcoubetis
2006 B conf
WiOpt
Vasilios A. Siris, Costas Courcoubetis
2005 B conf
PIMRC
Vasilios A. Siris, George Stamatakis
2005 J jnl
Comput. Commun.
Vasilios A. Siris, Harris M. Marinakis
2005 conf
WWIC
Vasilios A. Siris, Despina Triantafyllidou
2005 conf
ISWCS
Georgios I. Fotiadis, Vasilios A. Siris
2005 A conf
IPDPS
Vasilios A. Siris, Ilias Stavrakis
2005 C conf
LANMAN
Angelos P. Varvitsiotis, Vasilios A. Siris, Dimitris Primpas, Georgios I. Fotiadis, Athanassios Liakopoulos, Christos Bouras
2005 C conf
LANMAN
Vasilios A. Siris, Panagiotis Alafouzos
2004 B conf
GLOBECOM
Vasilios A. Siris, Fotini Papagalou
2004 B conf
PIMRC
Vasilios A. Siris
2004 A* conf
INFOCOM
Vasilios A. Siris, Costas Courcoubetis
2004 B conf
NETWORKING
Vasilios A. Siris, Despina Triantafyllidou
2003 J jnl
Comput. Commun.
Bob Briscoe, Vasilios Darlagiannis, Oliver Heckmann, Huw Oliver, Vasilios A. Siris, David Songhurst, Burkhard Stiller
2003 conf
PWC
Vasilios A. Siris, Matina Kavouridou
2003 J jnl
Comput. Commun.
Vasilios A. Siris, Costas Courcoubetis, George Margetis
2003 J jnl
Eur. Trans. Telecommun.
Costas Courcoubetis, Vasilios A. Siris, George D. Stamoulis
2002 conf
MWCN
Vasilios A. Siris
2002 B conf
PIMRC
Vasilios A. Siris, Bob Briscoe, David Songhurst
2002 J jnl
Perform. Evaluation
Costas Courcoubetis, Vasilios A. Siris
2002 A* conf
MobiCom
Vasilios A. Siris
2002 conf
QofIS
Vasilios A. Siris, Bob Briscoe, David Songhurst
2001 conf
QofIS
Vasilios A. Siris, Costas Courcoubetis, George Margetis
2000 J jnl
Telecommun. Syst.
Costas Courcoubetis, Frank P. Kelly, Vasilios A. Siris, Richard R. Weber
1999 conf
IS&N
George D. Stamoulis, Dimitrios Kalopsikakis, Anna Kirikoglou, Vasilios A. Siris, Didoe Prevedourou, Sofoklis Efremidis, Henryka Jormakka
1999 J jnl
Telecommun. Syst.
Costas Courcoubetis, Vasilios A. Siris, George D. Stamoulis
1999 J jnl
Comput. Networks
Didoe Prevedourou, Kostas Zygourakis, Sofoklis Efremidis, George D. Stamoulis, Dimitrios Kalopsikakis, Anna Kirikoglou, Vasilios A. Siris, Miltiades E. Anagnostou, Evangelia Tzifa, Tenia Louta, Panagiotis Demestichas, Nikos I. Liossis, Andreas Kind, Kirsi Valtari, Henryka Jormakka, Toni Jussila
1998 conf
Broadband Communications
Costas Courcoubetis, Frank P. Kelly, Vasilios A. Siris, Richard R. Weber
1998 conf
ICC
Costas Courcoubetis, Vasilios A. Siris
1998 A* conf
SIGMETRICS
Costas Courcoubetis, Vasilios A. Siris, George D. Stamoulis
1998 conf
ICE
Costas Courcoubetis, Vasilios A. Siris, George D. Stamoulis