Programmed rockets: an analysis of students' strategies. - Paul Brna (Br. J. Educ. Technol., 1989)

A framework for the Principled Debugging of Prolog Programs: How to Debug Non-Terminating Programs. - Paul Brna; Alan Bundy; Helen Pain (ALPUK, 1990)

The Application of Cognitive Diagnosis to the Quantitative Analysis of Simple Electrical Circuits. - Paul Brna; Andrew Caiger (Intelligent Tutoring Systems, 1992)

Reasoning with external representations: supporting the stages of selection, construction and use. - Richard Cox; Paul Brna (INTERCHI Adjunct Proceedings, 1993)

Logic Programming in Education: A Perspective on the State of Art. - Paul Brna (ICLP Workshop: Logic Programming and Education, 1994)

An Experimental Evaluation of Different Proposals for Teaching Prolog. - Mike Brayshaw; Helen Pain; Paul Brna; Andrew Bowles; David Robertson (PPIG, 1994)

Do diagrams make us smart(ER)? - Judith Good; Paul Brna; Richard Cox (PPIG, 1995)

Extending the Scope of the Student Model. - Susan Bull; Paul Brna; Helen Pain (User Model. User Adapt. Interact., 1995)

The Analogical Model-based Physics System: A Workbench to Investigate Issues in How to Support Learning by Analogy in Physics. - Paul Brna; David Duncan (CALISCE, 1996)

Searching for Examples: An Evaluation of an Intermediate Description Language for a Techniques Editor. - Paul Brna; Judith Good (PPIG, 1996)

Modelling students collaborating while learning about energy. - Paul Brna; Mark Burton (J. Comput. Assist. Learn., 1997)

Flexible ILE Development: Case Studies of an Agent-Based Software Engineering Approach. - David Duncan; Paul Brna (Intelligent Tutoring Systems, 1998)

Information Types and Cognitive Principles in Program Comprehension: Towards Adaptable Support for Novice Visual Programmers. - Judith Good; Paul Brna (Intelligent Tutoring Systems, 1998)

Editorial: Flexible education and the new technologies. - Paul Brna; Darina Dicheva (Br. J. Educ. Technol., 1998)

Collaboration in a Virtual World: Support for Conceptual Learning? - Paul Brna; Rob Aspin (Educ. Inf. Technol., 1998)

Adding intelligence to a learning environment: learner-centred design? - Paul Brna; Richard Cox (J. Comput. Assist. Learn., 1998)

Guest Editorial: Meeting the challenge of new technologies. - Paul Brna; Darina Dicheva (J. Comput. Assist. Learn., 1998)

Effective Affective in Intelligent Systems - Building on Evidence of Empathy in Teaching and Learning. - Bridget Cooper; Paul Brna; Alex Martins (IWAI, 1999)

Getting a GRiP on the comprehension of data-flow visual programming languages. - Judith Good; Paul Brna (PPIG, 1999)

Artificial intelligence in educational software: has its time come? - Paul Brna (Br. J. Educ. Technol., 1999)

Maintaining a Jointly Constructed Student Model. - Vania Dimitrova; John A. Self; Paul Brna (AIMSA, 2000)

Perfect presence: What does this mean for the design of virtual learning environments? - Denise Whitelock; Daniela M. Romano; Anne Jelfs; Paul Brna (Educ. Inf. Technol., 2000)

Classroom Conundrums: The Use of a Participant Design Methodology. - Bridget Cooper; Paul Brna (J. Educ. Technol. Soc., 2000)

Real Characters in Virtual Stories. - Isabel Machado 001; Ana Paiva 001; Paul Brna (International Conference on Virtual Storytelling, 2001)

Applying Interactive Open Learner Models to Learning Technical Terminology. - Vania Dimitrova; John A. Self; Paul Brna (User Modeling, 2001)

Learning to Think and Communicate with Diagrams: 14 Questions to Consider. - Paul Brna; Richard Cox; Judith Good (Artif. Intell. Rev., 2001)

Presence and Reflection in Training: Support for Learning to Improve Quality Decision-Making Skills under Time Limitations. - Daniela M. Romano; Paul Brna (Cyberpsychology Behav. Soc. Netw., 2001)

Fostering cartoon-style creativity with sensitive agent support in tomorrow's classroom. - Bridget Cooper; Paul Brna (J. Educ. Technol. Soc., 2001)

The Design and Implementation of a Graphical Communication Medium for Interactive Open Learner Modelling. - Vania Dimitrova; Paul Brna; John A. Self (Intelligent Tutoring Systems, 2002)

Towards authentic measures of program comprehension. - Judith Good; Paul Brna (PPIG, 2003)

Workshop on Social and Emotional Intelligence in Learning Environments. - Claude Frasson; Kaska Porayska-Pomsta; Cristina Conati; Guy Gouardères; W. Lewis Johnson; Helen Pain; Elisabeth André; Timothy W. Bickmore; Paul Brna; Isabel Fernández de Castro; Stefano A. Cerri; Cleide Jane Costa; et al. (Intelligent Tutoring Systems, 2004)

Workshop on Dialog-Based Intelligent Tutoring Systems: State of the Art and New Research Directions. - Neil T. Heffernan; Peter M. Wiemer-Hastings; Gregory Aist; Vincent Aleven; Ivon Arroyo; Paul Brna; Mark G. Core; Martha W. Evens; Reva Freedman; Michael Glass; Arthur C. Graesser; Kenneth R. Koedinger; et al. (Intelligent Tutoring Systems, 2004)

1, 2, 3 .... Action! Directing Real Actors and Virtual Characters. - Isabel Machado 001; Paul Brna; Ana Paiva 001 (TIDSE, 2004)

Program comprehension and authentic measurement: : a scheme for analysing descriptions of programs. - Judith Good; Paul Brna (Int. J. Hum. Comput. Stud., 2004)

Who Helps the Helper? A Situated Scaffolding System for Supporting Less Experienced Feedback Givers. - Duenpen Kochakornjarupong; Paul Brna; Paul Vickers (AIED, 2005)

The Focus-Metaphor Approach: A Novel Concept for the Design of Adaptive and User-Centric Interfaces. - Sven Laqua; Paul Brna (INTERACT, 2005)

Preface. - Paul Brna (Int. J. Artif. Intell. Educ., 2005)

Tell Me a Story. - Isabel Machado 001; Paul Brna; Ana Paiva 001 (Virtual Real., 2005)

Approximate Modelling of the Multi-dimensional Learner. - Rafael Morales 002; Nicolas van Labeke; Paul Brna (Intelligent Tutoring Systems, 2006)

A Contingency Analysis of LeActiveMath's Learner Model. - Rafael Morales 002; Nicolas van Labeke; Paul Brna (MICAI, 2006)

Evaluating of a Scaffolding System for Supporting Less Experienced Feedback Givers. - Duenpen Kochakornjarupong; Paul Brna (AIED, 2007)

Opening up the Interpretation Process in an Open Learner Model. - Nicolas van Labeke; Paul Brna; Rafael Morales 002 (Int. J. Artif. Intell. Educ., 2007)

Narrative and interactive learning environments. - Paul Brna; Rose Luckin (Interact. Learn. Environ., 2008)

Narrative Interactive Multimedia Learning Environments: Achievements and Challenges. - Paul Brna (New Directions in Intelligent Interactive Multimedia, 2008)

First Workshop on Artificial Intelligence in Education to Support the Social Inclusion of Communities (AIEDSIC). - Fabio N. Akhras; Paul Brna (AIED, 2011)

Adult Self-regulated Learning through Linking Experience in Simulated and Real World: A Holistic Approach. - Sónia Hetzner; Christina M. Steiner; Vania Dimitrova; Paul Brna; Owen Conlan (EC-TEL, 2011)

Taming Digital Traces for Informal Learning: A Semantic-Driven Approach. - Dhavalkumar Thakker; Dimoklis Despotakis; Vania Dimitrova; Lydia Lau; Paul Brna (EC-TEL, 2012)

Semantic Social Sensing for Improving Simulation Environments for Learning. - Vania Dimitrova; Christina M. Steiner; Dimoklis Despotakis; Paul Brna; Antonio Ascolese; Lucia Pannese; Dietrich Albert (EC-TEL, 2013)

Employing linked data and dialogue for modelling cultural awareness of a user. - Ronald Denaux; Vania Dimitrova; Lydia Lau; Paul Brna; Dhavalkumar Thakker; Christina M. Steiner (IUI, 2014)

Using DBpedia as a Knowledge Source for Culture-Related User Modelling Questionnaires. - Dhavalkumar Thakker; Lydia Lau; Ronald Denaux; Vania Dimitrova; Paul Brna; Christina M. Steiner (UMAP, 2014)

Twenty Years on: Reflections on "Supporting the Use of External Representations in Problem Solving"... - Richard Cox; Paul Brna (Int. J. Artif. Intell. Educ., 2016)

From Interactive Open Learner Modelling to Intelligent Mentoring: STyLE-OLM and Beyond. - Vania Dimitrova; Paul Brna (Int. J. Artif. Intell. Educ., 2016)