The collaborative cube puzzle: a comparison of virtual and real environments. - Josef Wideström; Ann-Sofie Axelsson; Ralph Schroeder; Alexander Nilsson; Ilona Heldal; Åsa Abelin (CVE, 2000)

Cubes in the Cube: A Comparison of a Puzzle-Solving Task in a Virtual and a Real Environment. - Ann-Sofie Axelsson; Åsa Abelin; Ilona Heldal; Ralph Schroeder; Josef Wideström (Cyberpsychology Behav. Soc. Netw., 2001)

Collaborating in networked immersive spaces: as good as being there together? - Ralph Schroeder; Anthony Steed; Ann-Sofie Axelsson; Ilona Heldal; Åsa Abelin; Josef Wideström; Alexander Nilsson; Mel Slater (Comput. Graph., 2001)

Strangers and friends in caves: an exploratory study of collaboration in networked IPT systems for extended periods of time. - Anthony Steed; Maria Spante; Ilona Heldal; Ann-Sofie Axelsson; Ralph Schroeder (SI3D, 2003)

Collaboration and Effectiveness for Distributed Meetings. - Ilona Heldal; Lars Bråthe; Ralph Schroeder (WWW (Posters), 2003)

Perception of color and space in virtual reality: a comparison between a real room and virtual reality models. - Monica Billger; Ilona Heldal; Beata Stahre; Kristian Renstrom (Human Vision and Electronic Imaging, 2004)

Immersiveness and Symmetry in Copresent Scenarios. - Ilona Heldal; Ralph Schroeder; Anthony Steed; Ann-Sofie Axelsson; Maria Spante; Josef Wideström (VR, 2005)

Successes and Failures in Co-Present Situations. - Ilona Heldal; Anthony Steed; Maria Spante; Ralph Schroeder; Sophia Bengtsson; Marja Partanen (Presence Teleoperators Virtual Environ., 2005)

Are two heads better than one?: object-focused work in physical and in virtual environments. - Ilona Heldal; Maria Spante; Mike Connell (VRST, 2006)

The Usability of Collaborative Virtual Environments and Methods for the Analysis of Interaction. - Ralph Schroeder; Ilona Heldal; Jolanda G. Tromp (Presence Teleoperators Virtual Environ., 2006)

Factors influencing flow of object focussed collaboration in collaborative virtual environments. - David J. Roberts 001; Ilona Heldal; Oliver Otto; Robin Wolff (Virtual Real., 2006)

Presence, Creativity and Collaborative Work in Virtual Environments. - Ilona Heldal; David J. Roberts 001; Lars Bråthe; Robin Wolff (HCI (1), 2007)

The Impact of Social Interaction on Usability for Distributed Virtual Environments. - Ilona Heldal (Int. J. Virtual Real., 2007)

Supporting participation in planning new roads by using virtual reality systems. - Ilona Heldal (Virtual Real., 2007)

Virtual Reality Supporting Environmental Planning Processes: A Case Study of the City Library in Gothenburg. - Kaj Sunesson; Carl Martin Allwood; Ilona Heldal; Dan Paulin; Mattias Roupé; Mikael Johansson; Börje Westerdahl (KES (3), 2008)

The role of web in launching and using radio communication for public safety. - Ilona Heldal (Int. J. Knowl. Web Intell., 2011)

Exploring object representations: Virtual reality models for environmental planning projects. - Ilona Heldal; Mattias Roupé (VSMM, 2012)

Collaboration Patterns in Mixed Reality Environments for a New Emergency Training Center. - Per Backlund; Ilona Heldal; Henrik Engström; Mikael Johannesson; Mikael Lebram (EMS, 2013)

CLIC: A Framework for Distributed, On-Demand, Human-Machine Cognitive Systems. - N. Mavridis; Stasinos Konstantopoulos; Ioannis A. Vetsikas; Ilona Heldal; Pythagoras Karampiperis; G. Mathiason; Serge Thill; Kostas Stathis; Vangelis Karkaletsis (CoRR, 2013)

A hash table construction algorithm for spatial hashing based on linear memory. - Cesar Tadeu Pozzer; Cicero Augusto de Lara Pahins; Ilona Heldal (Advances in Computer Entertainment, 2014)

Supporting communication within industrial doctoral projects: the thesis steering model. - Ilona Heldal; Eva Söderström; Lars Bråthe; Robert Murby (ITiCSE, 2014)

Simulation and serious games in emergency management: Experiences from two case studies. - Ilona Heldal (VSMM, 2016)

Contextual Support for Emergency Management Training: Challenges for Simulation and Serious Games. - Ilona Heldal (CONTEXT, 2017)

Simulations and Serious Games for Firefighter Training: Users' Perspective. - Ilona Heldal; Cecilia Hammar Wijkmark (ISCRAM, 2017)

Design and Development of a Mobile Application Supporting Planning for Future Parents. - Ilona Heldal; Igor Efrem; Carsten Helgesen (ICIMTH, 2018)

Assessing Visual Attention in Children Using GP3 Eye Tracker. - Cristina A. Costescu; Adrian Rosan; Brigitta Nagy; Andrea Hathazi; Attila Kovari; Jozsef Katona; Robert Demeter; Ilona Heldal; Carsten Helgesen; Serge Thill; Igor Efrem (CogInfoCom, 2019)

Emotion recognition in typical and atypical development - a technology-based paradigm. - Cristina A. Costescu; Adrian Rosan; Brigitta Nagy; Andrea Hathazi; Attila Kovari; Jozsef Katona; Ilona Heldal; Carsten Helgesen; Serge Thill; Robert Demeter (CogInfoCom, 2019)

A quantitative study of using Cisco Packet Tracer simulation software to improve IT students' creativity and outcomes. - Robert Demeter; Attila Kovari; Jozsef Katona; Ilona Heldal; Cristina A. Costescu; Adrian Rosan; Andrea Hathazi; Serge Thill (CogInfoCom, 2019)

The use of cognitive maps in product development. - Robert Demeter; Attila Kovari; Jozsef Katona; Ilona Heldal; Cristina A. Costescu; Adrian Rosan; Andrea Hathazi; Serge Thill (CogInfoCom, 2019)

Mobile Application Helps Planning Activities during Pregnancy. - Igor Efrem; Magnar Høyvik; Ilona Heldal; Carsten Helgesen; Attila Kovari; Jozsef Katona; Cristina A. Costescu; Adrian Rosan; Andrea Hathazi; Robert Demeter; Serge Thill (CogInfoCom, 2019)

Detecting oculomotor problems using eye tracking: Comparing EyeX and TX300. - Mads Gjerstad Eide; Ruben Watanabe; Ilona Heldal; Carsten Helgesen; Atle Birger Geitung; Harald Soleim (CogInfoCom, 2019)

mStikk - A Mobile Application for Learning Phlebotomy. - Tord Hettervik Frøland; Elisabeth Ersvær; Gry Sjøholt; Ilona Heldal; Anne Hjellbrekke Frèyen; Shangavi Logeswaran; Attila Kovari; Jozsef Katona; Cristina A. Costescu; Adrian Rosan; Andrea Hathazi (CogInfoCom, 2019)

The Examination Task of Source-code Debugging Using GP3 Eye Tracker. - Jozsef Katona; Attila Kovari; Cristina A. Costescu; Adrian Rosan; Andrea Hathazi; Ilona Heldal; Carsten Helgesen; Serge Thill; Robert Demeter (CogInfoCom, 2019)

Recording Eye-tracking Parameters during a Program Source-code Debugging Example. - Jozsef Katona; Attila Kovari; Ilona Heldal; Carsten Helgesen; Cristina A. Costescu; Adrian Rosan; Andrea Hathazi; Serge Thill; Robert Demeter (CogInfoCom, 2019)

Analysis of Gaze Fixations Using an Open-source Software. - Attila Kovari; Jozsef Katona; Robert Demeter; Adrian Rosan; Andrea Hathazi; Cristina A. Costescu; Ilona Heldal; Carsten Helgesen; Serge Thill (CogInfoCom, 2019)

Examination of Gaze Fixations Recorded during the Trail Making Test. - Attila Kovari; Jozsef Katona; Ilona Heldal; Carsten Helgesen; Cristina A. Costescu; Adrian Rosan; Andrea Hathazi; Serge Thill; Robert Demeter (CogInfoCom, 2019)

Can Remote Virtual Simulation Improve Practice-Based Training? Presence and Performance in Incident Commander Education. - Cecilia Hammar Wijkmark; Ilona Heldal; Maria-Monika Metallinou (Presence Teleoperators Virtual Environ., 2019)

Eye-tracking Technologies Supporting Vision Screening In Children. - Qasim Ali 006; Ilona Heldal; Carsten Gunnar Helgesen; Cristina A. Costescu; Attila Kovari; Jozsef Katona; Serge Thill (CogInfoCom, 2020)

Development of a technological screening platform for children. - Cristina A. Costescu; Adrian Rosan; Alina Petru; Serge Thill; Teodor Stefanut; Ilona Heldal; Attila Kovari; Jozsef Katona; Robert Demeter (CogInfoCom, 2020)

Cognitive robotics software development aspects based on experiments of future software engineers. - Robert Demeter; Attila Kovari; Jozsef Katona; Ilona Heldal; Cristina A. Costescu; Adrian Rosan; Serge Thill; Teodor Stefanut (CogInfoCom, 2020)

Using Eye- Tracking to Examine Query Syntax and Method Syntax Comprehension in LINQ. - Jozsef Katona; Attila Kovari; Ilona Heldal; Cristina A. Costescu; Adrian Rosan; Robert Demeter; Serge Thill; Teodor Stefanut (CogInfoCom, 2020)

Relationship between Education 4.0 and Cognitive InfoCommunications. - Attila Kovari; Jozsef Katona; Ilona Heldal; Robert Demeter; Cristina A. Costescu; Adrian Rosan; Serge Thill; Teodor Stefanut (CogInfoCom, 2020)

Remote Virtual Simulation for Incident Commanders: Opportunities and Possibilities. - Cecilia Hammar Wijkmark; Ilona Heldal; Sune Fankvist; Maria-Monika Metallinou (CogInfoCom, 2020)

Virtual and Live Simulation-Based Training for Incident Commanders. - Cecilia Hammar Wijkmark; Ilona Heldal (ISCRAM, 2020)

Games on Mobiles via Web or Virtual Reality Technologies: How to Support Learning for Biomedical Laboratory Science Education. - Tord Hettervik Frøland; Ilona Heldal; Gry Sjøholt; Elisabeth Ersvær (Inf., 2020)

Experiencing Immersive VR Simulation for Firefighter Skills Training. - Cecilia Hammar Wijkmark; Ilona Heldal; Maria-Monika Metallinou (ISCRAM, 2021)

Supporting School Aged Children to Train Their Vision by Using Serious Games. - Ilona Heldal; Carsten Helgesen; Qasim Ali 006; Daniel Patel; Atle Birger Geitung; Håvard Pettersen (Comput., 2021)

A Bibliometric Analysis of Virtual Reality-Aided Vision Therapy. - Qasim Ali 006; Ilona Heldal; Carsten Gunnar Helgesen (ICIMTH, 2022)

At-Risk People's Safety in Fire Incidents: Insights Learned from Applying Reliability Index Method. - Naser Kazemi Eilaki; Trond Nordvik; Ilona Heldal; Carolyn Ahmer; Bjarne Christian Hagen (ICSRS, 2022)

Digital Game-Based Support for Learning the Phlebotomy Procedure in the Biomedical Laboratory Scientist Education. - Tord Hettervik Frøland; Ilona Heldal; Turid Aarhus Braseth; Irene Nygård; Gry Sjøholt; Elisabeth Ersvær (Comput., 2022)

Serious Games for Vision Training Exercises with Eye-Tracking Technologies: Lessons from Developing a Prototype. - Qasim Ali 006; Ilona Heldal; Carsten Gunnar Helgesen; Are Dæhlen (Inf., 2022)

Towards Developing an Animation Kit for Functional Vision Screening with Eye Trackers. - Qasim Ali 006; Ilona Heldal; Carsten Gunnar Helgesen; Are Dæhlen (ETRA, 2023)

Towards a Framework for Visualization and Analysis of Eye Tracking Data for Functional Vision Screening. - Qasim Ali 006; Carsten Gunnar Helgesen; Ilona Heldal (HEDA@STAF, 2023)

Analyzing Eye Tracking Data using Symbolic Aggregate Approximation. - Carsten Gunnar Helgesen; Atle Birger Geitung; Ilona Heldal; Henrik Borgli (HEDA@STAF, 2023)

Technologies Supporting Screening Oculomotor Problems: Challenges for Virtual Reality. - Are Dæhlen; Ilona Heldal; Qasim Ali 006 (Comput., 2023)

SSRepL-ADHD: Adaptive Complex Representation Learning Framework for ADHD Detection from Visual Attention Tasks. - Abdul Rehman; Ilona Heldal; Jerry Chun-Wei Lin (IEEE Big Data, 2024)

Towards a Supporting Framework for Neuro-Developmental Disorder: Considering Artificial Intelligence, Serious Games and Eye Tracking. - Abdul Rehman; Ilona Heldal; Diana L. Stilwell; Jerry Chun-Wei Lin (IEEE Big Data, 2024)

Linking Data from Eye-Tracking and Serious Games to NDD Characteristics: A Bibliometric Study. - Are Dæhlen; Ilona Heldal; Jozsef Katona (ETRA, 2024)

Towards More Accurate Help: Informing Teachers how to Support NDD Children by Serious Games and Eye Tracking Technologies. - Are Dæhlen; Ilona Heldal; Abdul Rehman; Qasim Ali 006; Jozsef Katona; Attila Kovari; Teodor Stefanut; Paula Costa Ferreira 004; Cristina A. Costescu (ETRA, 2024)

Implementation of a weakly structured system as a case of digital transformation - a study of an emergency response training organization. - Vladislav Fomin 001; Cecilia Hammar Wijkmark; Ilona Heldal (HICSS, 2024)

Enhancing Psychologists' Understanding Through Explainable Deep Learning Framework for ADHD Diagnosis. - Abdul Rehman; Jerry Chun-Wei Lin; Ilona Heldal (Expert Syst. J. Knowl. Eng., 2025)