Arguing with the Devil: teaching in Controversial Domains. - Symeon Retalis; Helen Pain; Mandy Haggith (Intelligent Tutoring Systems, 1996)

Towards a novel networked learning environment. - Anastasios Koutoumanos; Nikolaos Papaspyrou; Symeon Retalis; Emmanuel Skordalakis (WebNet, 1996)

Building Quality Web Based Tele-Learning Systems. - Symeon Retalis; Emmanuel Skordalakis (Teleteaching, 1998)

Evaluating the Effectiveness of an ODL Hypermedia System and Courseware at the National Technical University of Athens: A Case Study. - Vassilis Makrakis; Symeon Retalis; Anastasios Koutoumanos; Nikolaos Papaspyrou; Manolis Skordalakis (J. Univers. Comput. Sci., 1998)

CADMOS: μία μεθοδολογία ανάπτυξης διδακτικών συστημάτων με έμφαση στην κατασκευή διαδικτυακού εκπαιδευτικού λογισμικού - Symeon Retalis (1998)

Networked learning with user-enriched educational material. - Vassilios C. Vescoukis; Symeon Retalis (J. Comput. Assist. Learn., 1999)

Developing an Architecture for the Software Subsystem of a Learning Technology System - An Engineering Approach. - Paris Avgeriou; Symeon Retalis; Andreas Papasalouros; Manolis Skordalakis (ICALT, 2001)

An Architecture for Open Learning Management Systems. - Paris Avgeriou; Symeon Retalis; Manolis Skordalakis (Panhellenic Conference on Informatics, 2001)

"Kairos": A Web-Based System for Automatic Generation of Weather Forecasts in Two Languages, Greek-English. - Dimitrios Retalis; Nikos Lourados; Symeon Retalis; Harris Papageorgiou (WWW Posters, 2001)

CADMOS: an approach to developing Web-based instructional systems. - Symeon Retalis; Emmanuel Skordalakis (Comput. Hum. Behav., 2001)

Building Quality into Learning Management Systems - An Architecture-Centric Approach. - Paris Avgeriou; Symeon Retalis; Manolis Skordalakis (ER (Workshops), 2002)

Modelling Web-Based Instructional Systems. - Symeon Retalis; Paris Avgeriou (J. Inf. Technol. Educ., 2002)

Patterns for Designing Learning Management Systems. - Paris Avgeriou; Andreas Papasalouros; Simos Retalis (EuroPLoP, 2003)

Building Interoperability among Learning Content Management Systems. - Bernd Simon; Symeon Retalis; Stefan Brantner (WWW (Posters), 2003)

Towards a Pattern Language for Learning Management Systems. - Paris Avgeriou; Andreas Papasalouros; Symeon Retalis; Manolis Skordalakis (J. Educ. Technol. Soc., 2003)

Network-Based Business Simulation Activities in Technical Professional Education. - Vassilios C. Vescoukis; Symeon Retalis; Dimosthenis Anagnostopoulos (Interact. Learn. Environ., 2003)

Modeling learning technology systems as business systems. - Paris Avgeriou; Symeon Retalis; Nikolaos Papaspyrou (Softw. Syst. Model., 2003)

Giving More Adaptation Flexibility to Authors of Adaptive Assessments. - Aimilia Tzanavari; Symeon Retalis; Panikos Pastellis (AH, 2004)

The Learner's Mirror. - Dimitrios Vogiatzis; Aimilia Tzanavari; Symeon Retalis; Paris Avgeriou; Andreas Papasalouros (EuroPLoP, 2004)

Automating Standards-Based Courseware Development Using UML. - Andreas Papasalouros; Symeon Retalis; Nikolaos Papaspyrou (ICWE, 2004)

DEPTH: A Methodology for Usability Evaluation of Web Sites Based on Design Patterns and Heuristics Criteria. - Yannis Psaromiligkos; Konstantinos Siassiakos; Symeon Retalis (ICWE Workshops, 2004)

Workshop on Applications of Semantic Web Technologies for E-learning p. - Lora Aroyo; Darina Dicheva; Peter Brusilovsky; Paloma Díaz 001; Vania Dimitrova; Erik Duval; Jim E. Greer; Tsukasa Hirashima; Heinz Ulrich Hoppe; Geert-Jan Houben; Mitsuru Ikeda; Judy Kay; et al. (Intelligent Tutoring Systems, 2004)

Editorial message: special track on engineering e-learning systems. - Symeon Retalis; Paris Avgeriou (SAC, 2004)

Semantic Description of Educational Adaptive Hypermedia based on a Conceptual Model. - Andreas Papasalouros; Symeon Retalis; Nikolaos Papaspyrou (J. Educ. Technol. Soc., 2004)

An approach for managing the evolution of web-based educational applications. - Yannis Psaromiligkos; Symeon Retalis (Int. J. Web Eng. Technol., 2004)

Defining a UML Profile for Web-based Educational Applications. - Andreas Papasalouros; Symeon Retalis (IWWOST@CAiSE, 2005)

Designing and Generating Educational Adaptive Hypermedia Applications. - Symeon Retalis; Andreas Papasalouros (J. Educ. Technol. Soc., 2005)

CRITON: A Hypermedia Design Tool. - Paris Avgeriou; Symeon Retalis (Multim. Tools Appl., 2005)

A Model for Interoperability in Computer Supported Collaborative Learning. - Georgios Kahrimanis; Andreas Papasalouros; Nikolaos M. Avouris; Symeon Retalis (ICALT, 2006)

CSCL Scripting Patterns: Hierarchical Relationships and Applicability. - Davinia Hernández Leo; Eloy D. Villasclaras-Fernández; Juan I. Asensio-Pérez; Yannis A. Dimitriadis; Symeon Retalis (ICALT, 2006)

Engineering an interoperable adaptive hypermedia testing tool supporting user adaptable strategies. - Fotis Lazarinis; Symeon Retalis (AIAI, 2006)

Eliciting design patterns for e-learning systems. - Symeon Retalis; Petros Georgiakakis; Yannis A. Dimitriadis (Comput. Sci. Educ., 2006)

Demystifying the asynchronous network supported collaborative learning systems. - Petros Georgiakakis; Symeon Retalis (Int. J. Comput. Appl. Technol., 2006)

The Design of AIED Systems: Learner-Centred and Design Pattern Approaches. - Vladan Devedzic; Judith Good; Andreas Harrer; Rosemary Luckin; Darren Pearce; Symeon Retalis; Judy Robertson (AIED, 2007)

The use of CSCL design patterns as a vehicle for effective & efficient learning designs: linking patterns to authentic educational case studies. - Yannis A. Dimitriadis; Symeon Retalis; Chris DiGiano (CSCL, 2007)

DEPTH TOOLKIT: A Web-Based Tool for Designing and Executing Usability Evaluations of E-Sites Based on Design Patterns. - Petros Georgiakakis; Symeon Retalis; Yannis Psaromiligkos; George Papadimitriou 004 (HCI (1), 2007)

Analyze Me: Open Learner Model in an Adaptive Web Testing System. - Fotis Lazarinis; Symeon Retalis (Int. J. Artif. Intell. Educ., 2007)

Analysing interaction behaviour in network supported collaborative learning environments: a holistic approach. - Ourania Petropoulou; Georgia Lazakidou; Symeon Retalis; Charalambos Vrasidas (Int. J. Knowl. Learn., 2007)

A Learning Research Informed Design and Evaluation of a Web-Enhanced Object Oriented Programming Seminar. - Stavroula C. Georgantaki; Symeon Retalis (J. Inf. Syst. Educ., 2007)

Industrial Track Session - Introduction. - Symeon Retalis (CSMR, 2008)

Creating Adaptive e-Learning Board Games for School Settings Using the ELG Environment. - Symeon Retalis (J. Univers. Comput. Sci., 2008)

SyCo: a collaborative learning tool for generating ideas in private and in public. - Chrisovalantis Kefalidis; Georgia Lazakidou; Symeon Retalis (IDC, 2009)

Knowledge Sharing Strategies for Collaborative Creativity. - Rory L. L. Sie; Marlies Bitter-Rijpkema; Peter B. Sloep; Simeon Retalis (MTCSCC@EC-TEL, 2009)

Design Patterns for Creativity. - Petros Georgiakakis; Symeon Retalis (EuroPLoP, 2009)

Using e-learning design patterns to augment learners' experiences. - Yannis A. Dimitriadis; Peter Goodyear; Symeon Retalis (Comput. Hum. Behav., 2009)

Combining Streaming Media and Collaborative Elements to Support Lifelong Learning. - Charalambos Constantinou; Symeon Retalis; George A. Papadopoulos; Vrasidas Charalambos (Intelligent Collaborative e-Learning Systems and Applications, 2009)

Designing Configurations of CSCL Scripts Using Interaction Analysis Findings. - Ourania Petropoulou; Mary Katsamani; Georgia Lazakidou; Symeon Retalis; Petros Georgiakakis; Stamos T. Karamouzis (INCoS, 2010)

Using computer supported collaborative learning strategies for helping students acquire self-regulated problem-solving skills in mathematics. - Georgia Lazakidou; Symeon Retalis (Comput. Educ., 2010)

A new approach to collaborative creativity support of new product designers. - Marlies Bitter-Rijpkema; Peter B. Sloep; Rory L. L. Sie; Peter van Rosmalen; Symeon Retalis; Mary Katsamani (Int. J. Web Based Communities, 2011)

Virtual Environments for Collaborative Innovation and Learning. - Symeon Retalis; Peter B. Sloep (J. Univers. Comput. Sci., 2011)

Enriched assessment rubrics: a new medium for enabling teachers to easily assess student's performance when participating in complex interactive learning scenarios. - Ourania Petropoulou; Marianthi Vassilikopoulou; Symeon Retalis (Oper. Res., 2011)

Utilising a collaborative macro-script to enhance student engagement: A mixed method study in a 3D virtual environment. - Hara Bouta; Symeon Retalis; Fotini Paraskeva (Comput. Educ., 2012)

Educational Innovation with Learning Networks: Tools and Developments. - Peter B. Sloep; Adriana J. Berlanga; Wolfgang Greller; Slavi Stoyanov; Marcel van der Klink; Symeon Retalis; Jan Hensgens (J. Univers. Comput. Sci., 2012)

Making Adaptations of CSCL Scripts by Analyzing Learners' Online Behavior. - Ourania Petropoulou; Georgia Lazakidou; Petros Georgiakakis; Symeon Retalis (Intelligent Adaptation and Personalization Techniques in Computer-Supported Collaborative Learning, 2012)

Interaction patterns for Windows 8 tablet applications. - Dimitris-Ilias Gkanatsios; Symeon Retalis (EuroPLoP, 2013)

Assessing students' performance using the learning analytics enriched rubrics. - Ioannis Dimopoulos; Ourania Petropoulou; Symeon Retalis (LAK, 2013)

Enhancing primary school children collaborative learning experiences in maths via a 3D virtual environment. - Hara Bouta; Symeon Retalis (Educ. Inf. Technol., 2013)

Introduction to the special issue on Web-2.0 technologies in support of team-based learning for innovation. - Peter B. Sloep; Adriana J. Berlanga; Symeon Retalis (Comput. Hum. Behav., 2014)

Using Embodied Learning Technology to Advance Motor Performance of Children with Special Educational Needs and Motor Impairments. - Panagiotis Kosmas; Andri Ioannou; Symeon Retalis (EC-TEL, 2017)

Towards the improvement of the cognitive, motoric and academic skills of students with special educational needs using Kinect learning games. - Maria Kourakli; Ioannis Altanis; Symeon Retalis; Michail Boloudakis; Dimitrios Zbainos; Katerina Antonopoulou (Int. J. Child Comput. Interact., 2017)

Training Νovice teachers to design moodle-based units of learning using a CADMOS-enabled learning design sprint. - Michail Boloudakis; Symeon Retalis; Yannis Psaromiligkos (Br. J. Educ. Technol., 2018)

Using sensing technologies to explain children's self-representation in motion-based educational games. - Serena Lee-Cultura; Kshitij Sharma; Sofia Papavlasopoulou; Symeon Retalis; Michail N. Giannakos (IDC, 2020)

Children's Interaction with Motion-Based Touchless Games: Kinecting Effectiveness and Efficiency. - Serena Lee-Cultura; Kshitij Sharma; Valeria Aloizou; Symeon Retalis; Michail N. Giannakos (CHI PLAY (Companion), 2020)

Designing and Orchestrating the Classroom Experience for Technology-Enhanced Embodied Learning. - Marianna Ioannou; Andri Ioannou; Yiannis Georgiou; Symeon Retalis (ICLS, 2020)

Teaching Cultural Heritage through a Narrative-based Game. - Irini Malegiannaki; Thanasis Daradoumis; Symeon Retalis (ACM Journal on Computing and Cultural Heritage, 2020)

Using a Story-Driven Board Game to Engage Students and Adults With Cultural Heritage. - Irini Malegiannaki; Thanasis Daradoumis; Symeon Retalis (Int. J. Game Based Learn., 2021)

Integrating a movement-based learning platform as core curriculum tool in kindergarten classrooms. - Valeria Aloizou; Stavey Linardatou; Michael Boloudakis; Symeon Retalis (Br. J. Educ. Technol., 2025)

A learning experience design framework for multimodal learning in the early childhood. - Valeria Aloizou; Andri Ioannou; Michael Boloudakis; Symeon Retalis (Smart Learn. Environ., 2025)