Naming as a fundamental concept of open hypermedia systems. - Manolis Tzagarakis; Nikos Karousos; Dimitris Christodoulakis; Siegfried Reich (Hypertext, 2000)

Babylon Bookmarks: A Taxonomic Approach to the Management of WWW Bookmarks. - Nikos Karousos; Ioannis Panaretou; Ippokratis Pandis; Manolis Tzagarakis (Metainformatics, 2002)

Increasing the usage of open hypermedia systems: a developer-side approach. - Nikos Karousos; Manolis Tzagarakis; Ippokratis Pandis (Hypertext, 2003)

Developer Support in Open Hypermedia Systems: Towards a Hypermedia Service Discovery Mechanism. - Nikos Karousos; Ippokratis Pandis (Metainformatics, 2003)

Offering open hypermedia services to the WWW: a step-by-step approach for developers. - Nikos Karousos; Ippokratis Pandis; Siegfried Reich; Manolis Tzagarakis (WWW, 2003)

Assessing the Impacts of Open Hypermedia Problems on Structural Computing. - Nikos Karousos; Nikos Tsirakis (Metainformatics, 2004)

Semantically annotated hypermedia services. - Ippokratis Pandis; Nikos Karousos; Thanassis Tiropanis (Hypertext, 2005)

Issues of usability in hypermedia systems: a usability estimation questionnaire for hypermedia designers. - Nikos Tsirakis; Nikos Karousos; George Gkotsis (Metainformatics, 2005)

Personalization Services in Argumentation Tools: a Catalyst for Learning. - Christina E. Evangelou; Nikos Karousos; Manolis Tzagarakis; George Gkotsis; Dora Nousia (EC-TEL Workshops, 2006)

Supporting the design of behaviors in Callimachus. - Manolis Tzagarakis; Michail Vaitis; Nikos Karousos (Hypertext, 2006)

Designing domain-specific behaviours in structural computing. - Manolis Tzagarakis; Michail Vaitis; Nikos Karousos (New Rev. Hypermedia Multim., 2006)

Augmenting Collaboration with Personalization Services. - Christina E. Evangelou; Manolis Tzagarakis; Nikos Karousos; George Gkotsis; Dora Nousia (Int. J. Web Based Learn. Teach. Technol., 2007)

Selecting Services for Web Applications: the Open Hypermedia Case. - Nikos Karousos; Manolis Tzagarakis; Chris Diolis; Athanasios K. Tsakalidis (J. Web Eng., 2007)

Awareness Mechanisms for Web-Based Argumentative Collaboration. - Manolis Tzagarakis; Nikos Karousos (Int. J. Web Based Learn. Teach. Technol., 2008)

CoPe_it!: argumentative collaboration towards learning. - Manolis Tzagarakis; George Gkotsis; Markos Hatzitaskos; Nikos Karousos; Nikos I. Karacapilidis (CSCL (2), 2009)

Online Communities: The Case of Immigrants in Greece. - Ioannis Panaretou; Nikos Karousos; Ioannis Kostopoulos; Georgia-Barbara Foteinou; Giorgos Pavlidis (e-Democracy, 2009)

On the Development of Web-Based Argumentative Collaboration Support Systems. - Manolis Tzagarakis; Nikos Karousos; Nikos I. Karacapilidis (WSKS (1), 2009)

Tackling Cognitively-Complex Collaboration with CoPe_it! - Nikos I. Karacapilidis; Manolis Tzagarakis; Nikos Karousos; George Gkotsis; Vassilis Kallistros; Spyros Christodoulou; Christos Mettouris (Int. J. Web Based Learn. Teach. Technol., 2009)

Usability Evaluation of Web-Based Collaboration Support Systems: The Case of CoPe_it! - Nikos Karousos; Spyridon Papaloukas; Nektarios Kostaras; Michalis Nik Xenos; Manolis Tzagarakis; Nikos I. Karacapilidis (WSKS (1), 2010)

Mitigating the cognitive overload of contemporary argumentation-based collaboration settings. - Nikos I. Karacapilidis; Nikos Karousos; Manolis Tzagarakis; Spyros Christodoulou (CollaborateCom, 2011)

Development of Argumentation Skills via Learning Management Systems - Bringing together Argumentation Support Tools and Learning Management Systems. - Nikos Karousos; Spyros Papadakis; Michalis Nik Xenos; Nikos I. Karacapilidis; Manolis Tzagarakis (KEOD, 2011)

Learning Management Systems and Learning 2.0. - Alexandros Soumplis; Eleni Koulocheri; Nektarios Kostaras; Nikos Karousos; Michalis Nik Xenos (Int. J. Web Based Learn. Teach. Technol., 2011)

Effortless tool-based evaluation of web form filling tasks using keystroke level model and fitts law. - Nikos Karousos; Christos Katsanos; Nikolaos K. Tselios; Michalis Nik Xenos (CHI Extended Abstracts, 2013)

KLM Form Analyzer: Automated Evaluation of Web Form Filling Tasks Using Human Performance Models. - Christos Katsanos; Nikos Karousos; Nikolaos K. Tselios; Michalis Nik Xenos; Nikolaos M. Avouris (INTERACT (2), 2013)

Argumentation-Based Learning for Communities of Practice. - Nikos I. Karacapilidis; Manolis Tzagarakis; Nikos Karousos (Int. J. Knowl. Soc. Res., 2013)

SONETA: A Social Media Geo-Trends Analysis Tool. - Ioannis Ioannidis; Eleftherios Papachristos; Christos Katsanos; Nikolaos Karousos; Christos Fidas; Nikolaos M. Avouris (HCI (22), 2014)

Evaluating User's Emotional Experience in HCI: The PhysiOBS Approach. - Alexandros Liapis; Nikos Karousos; Christos Katsanos; Michalis Nik Xenos (HCI (2), 2014)

Deployment, Usage and Impact of Social Media Tools in Small and Medium Enterprises: A Case Study. - Eleftherios Papachristos; Christos Katsanos; Nikolaos Karousos; Ioannis Ioannidis; Christos Fidas; Nikolaos M. Avouris (HCI (22), 2014)

Subjective Assessment of Stress in HCI: A Study of the Valence-Arousal Scale using Skin Conductance. - Alexandros Liapis; Christos Katsanos; Dimitris Sotiropoulos; Michalis Nik Xenos; Nikos Karousos (CHItaly, 2015)

Recognizing Emotions in Human Computer Interaction: Studying Stress Using Skin Conductance. - Alexandros Liapis; Christos Katsanos; Dimitris Sotiropoulos; Michalis Nik Xenos; Nikos Karousos (INTERACT (1), 2015)

Learning web form design by using the KLM form analyzer: a case study. - Christos Katsanos; Nikolaos K. Tselios; Nikolaos Karousos; Michalis Xenos (Panhellenic Conference on Informatics, 2015)

Stress recognition in human-computer interaction using physiological and self-reported data: a study of gender differences. - Alexandros Liapis; Christos Katsanos; Dimitris Sotiropoulos; Michalis Xenos; Nikos Karousos (Panhellenic Conference on Informatics, 2015)

Weighted logic locking: A new approach for IC piracy protection. - Nikolaos Karousos; Konstantinos Pexaras; Irene G. Karybali; Emmanouil Kalligeros (IOLTS, 2017)

Stress in interactive applications: analysis of the valence-arousal space based on physiological signals and self-reported data. - Alexandros Liapis; Christos Katsanos; Dimitris Sotiropoulos; Nikos Karousos; Michalis Xenos (Multim. Tools Appl., 2017)

Visualizing the keystroke level model in web form filling tasks through adaptive animation towards learning. - Nikos Karousos; Dionisis Karousos (PCI, 2018)

UDSP+: stress detection based on user-reported emotional ratings and wearable skin conductance sensor. - Alexandros Liapis; Christos Katsanos; Nikos Karousos; Michalis Xenos; Theofanis Orphanoudakis (UbiComp/ISWC Adjunct, 2019)

Oracle-based Logic Locking Attacks: Protect the Oracle Not Only the Netlist. - Emmanouil Kalligeros; Nikolaos Karousos; Irene G. Karybali (DATE, 2020)

Stress Heatmaps: A Fuzzy-Based Approach that Uses Physiological Signals. - Alexandros Liapis; Christos Katsanos; Nikos Karousos; Dimitris Sotiropoulos; Michalis Xenos; Theofanis Orphanoudakis (HCI (22), 2020)

WKLM-FA: A Web Application for Automated Human-Computer Interaction Modeling of Web Form Filling Tasks. - Nikos Karousos; Fotios Tatsis; Dionisis Karousos; Christos Katsanos; Michalis Xenos; Nikolaos K. Tselios (PCI, 2020)

Evaluating the remote examination process applied by the Hellenic Open University (HOU) during COVID-19 pandemic: Students' opinions. - Alexandros Liapis; George Vorvilas; Alkis Korovesis; Dimitra Aggelopoulou; Nikos Karousos; Efstathios P. Efstathopoulos (EDUCON, 2021)

User Experience Evaluation: A Validation Study of a Tool-based Approach for Automatic Stress Detection Using Physiological Signals. - Alexandros Liapis; Christos Katsanos; Nikos Karousos; Michalis Xenos; Theofanis Orphanoudakis (Int. J. Hum. Comput. Interact., 2021)

Thwarting All Logic Locking Attacks: Dishonest Oracle With Truly Random Logic Locking. - Nimisha Limaye; Emmanouil Kalligeros; Nikolaos Karousos; Irene G. Karybali; Ozgur Sinanoglu (IEEE Trans. Comput. Aided Des. Integr. Circuits Syst., 2021)

Tool-mediated HCI modelling instruction: evidence from three studies. - Christos Katsanos; Michalis Xenos; Nikolaos K. Tselios; Nikos Karousos (Behav. Inf. Technol., 2022)

Faculty members' Perceptions of Remote Electronic Examinations in Distance Academic Education. - George Vorvilas; Alexandros Liapis; Nikos Karousos; Leonidas Theodorakopoulos; Eirini Lagiou; Achilles Kameas (IISA, 2023)

An Automated Text Summarization Approach for Open-ended Responses in Student Online Surveys. - George Vorvilas; Despoina Pantazi; Evgenia Paxinou; Georgios Feretzakis; Dimitrios Kalles; Achilles Kameas; Nikos Karousos; Vassilios S. Verykios (IISA, 2024)

Supporting Argumentation in a Service-Oriented Hypertext System. - Nikos Karousos; Manolis Tzagarakis; George Vorvilas; Nikos I. Karacapilidis (KES, 2024)

Summarizing University Students? Qualitative Feedback on Online Exams: A Microservice-Oriented Approach. - Nikos Karousos; George Vorvilas; Despoina Pantazi; Vassilios S. Verykios (PCI, 2024)

Summarizing responses to open-ended questions in educational surveys: A microservice-oriented approach. - Nikos Karousos; George Vorvilas; Despoina Pantazi; Manolis Tzagarakis; Nikos I. Karacapilidis; Vassilios S. Verykios (Intell. Decis. Technol., 2025)