The physiological measurements as a critical indicator in users' experience evaluation. - Alexandros Liapis; Michalis Nik Xenos (Panhellenic Conference on Informatics, 2013)

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

Users' emotional experience using different modalities: a comparative study. - Eleni Chatzidaki; Alexandros Liapis; Alexandros Tsironis; Michalis Nik Xenos; Nektarios Kostaras (Int. J. Web Eng. Technol., 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)

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)

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)

Don't Leave Me Alone: Retrospective Think Aloud Supported by Real-Time Monitoring of Participant's Physiology. - Alexandros Liapis; Christos Katsanos; Michalis Xenos (HCI (1), 2018)

Effect of Personality Traits on UX Evaluation Metrics: A Study on Usability Issues, Valence-Arousal and Skin Conductance. - Alexandros Liapis; Christos Katsanos; Michalis Xenos; Theofanis Orphanoudakis (CHI Extended Abstracts, 2019)

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)

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)

Human-computer interaction: evaluating the user experience of interactive information systems based on bio-signals analysis - Alexandros Liapis (2020)

PSSUQ-GR: A First Step Towards Standardization of the Post-Study System Usability Questionnaire in Greek. - Christos Katsanos; Nikolaos K. Tselios; Alexandros Liapis (CHI Greece, 2021)

Effect of Sense of Direction on Open Card Sorts for Websites. - Georgia Zafeiriou; Christos Katsanos; Alexandros Liapis (CHI Greece, 2021)

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)

Detection of Subtle Stress Episodes During UX Evaluation: Assessing the Performance of the WESAD Bio-Signals Dataset. - Alexandros Liapis; Evanthia Faliagka; Christos Katsanos; Christos P. Antonopoulos; Nikolaos S. Voros (INTERACT (3), 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)

Effect of Self-efficacy on Open Card Sorts for Websites. - Christos Katsanos; Georgia Zafeiriou; Alexandros Liapis (HCI (4), 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)

UX evaluation of open MOOC platforms: a comparative study between Moodle and Open edX combining user interaction metrics and wearable biosensors. - Alexandros Liapis; Vicky Maratou; Theodor Panagiotakopoulos; Christos Katsanos; Achilles Kameas (Interact. Learn. Environ., 2023)

Combining Heuristics and User Testing: Towards a Holistic Approach in User eXperience (UX) Evaluation of Open MOOC Platforms. - Alexandros Liapis; Eleni Georgakakou; Achilles Kameas (HCI (30), 2025)