Using Computer Algebra Systems as Cognitive Tools. - Jochen Büdenbender; Adrian Frischauf; Georgi Goguadze; Erica Melis; Paul Libbrecht; Carsten Ullrich (Intelligent Tutoring Systems, 2002)

Semantics for Web-Based Mathematical Education Systems. - Erica Melis; Jochen Büdenbender; Georgi Goguadze; Paul Libbrecht; Carsten Ullrich (Semantic Web Workshop, 2002)

An Efficient Presentation-Architecture for Personalized Content. - Paul Libbrecht; Carsten Ullrich; Stefan Winterstein (Berliner XML Tage, 2003)

A Presentation Architecture for Individualized Content. - Alberto González Palomo; Paul Libbrecht; Carsten Ullrich (WWW (Posters), 2003)

Knowledge Representation and Management in ACTIVEMATH. - Erica Melis; Jochen Büdenbender; Georgi Goguadze; Paul Libbrecht; Carsten Ullrich (Ann. Math. Artif. Intell., 2003)

Wissensmodellierung und -nutzung in ActiveMath. - Erica Melis; Georgi Goguadze; Paul Libbrecht; Carsten Ullrich (Künstliche Intell., 2003)

A Flexible and Efficient Presentation-Architecture for Adaptive Hypermedia: Description and Technical Evaluation. - Carsten Ullrich; Paul Libbrecht; Stefan Winterstein; Martin Mühlenbrock (ICALT, 2004)

Authoring Presentation for OpenMath. - Shahid Manzoor; Paul Libbrecht; Carsten Ullrich; Erica Melis (MKM, 2005)

Methods to Access and Retrieve Mathematical Content in ActiveMath. - Paul Libbrecht; Erica Melis (ICMS, 2006)

Authoring LeActiveMath Calculus Content. - Paul Libbrecht; Christian Gross 004 (MKM, 2006)

Semantic-aware components and services of ActiveMath. - Erica Melis; Giorgi Goguadze; Martin Homik; Paul Libbrecht; Carsten Ullrich; Stefan Winterstein (Br. J. Educ. Technol., 2006)

Specification, authoring and prototyping of personalised workplace learning solutions. - Peter Dolog; Milos Kravcik; Alexandra I. Cristea; Daniel Burgos; Paul De Bra; Stefano Ceri; Vladan Devedzic; Geert-Jan Houben; Paul Libbrecht; Maristella Matera; Erica Melis; Wolfgang Nejdl; et al. (Int. J. Learn. Technol., 2007)

Educational Services in the ACTIVEMATH Learning Environment. - Carsten Ullrich; Paul Libbrecht (The Learning Grid Handbook, 2008)

Cross-Curriculum Search for Intergeo. - Paul Libbrecht; Cyrille Desmoulins; Christian Mercat; Colette Laborde; Michael Dietrich; Maxim Hendriks (AISC/MKM/Calculemus, 2008)

A Model of Re-use of E-Learning Content. - Paul Libbrecht (EC-TEL, 2008)

The Freedom to Extend OpenMath and its Utility. - James H. Davenport; Paul Libbrecht (Math. Comput. Sci., 2008)

A Cross-Curriculum Representation for Handling and Searching Dynamic Geometry Competencies. - Paul Libbrecht; Cyrille Desmoulins (Semantic Web Technologies for e-Learning, 2009)

ACTIVEMATH - a Learning Platform With Semantic Web Features. - Erica Melis; Giorgi Goguadze; Paul Libbrecht; Carsten Ullrich (Semantic Web Technologies for e-Learning, 2009)

Culturally adapted mathematics education with ActiveMath. - Erica Melis; Georgi Goguadze; Paul Libbrecht; Carsten Ullrich (AI Soc., 2009)

Notations Around the World: Census and Exploitation. - Paul Libbrecht (AISC/MKM/Calculemus, 2010)

What You Check is What You Get: Authoring with jEditOQMath. - Paul Libbrecht (ICALT, 2010)

Understanding the Learners' Actions when Using Mathematics Learning Tools. - Paul Libbrecht; Sandra Rebholz; Daniel Herding; Wolfgang Müller 004; Felix Tscheulin (AISC/MKM/Calculemus, 2012)

Authoring of semantic mathematical content for learning on the web. - Paul Libbrecht (2012)

Tales of a Companion Teacher Analytics. - Paul Libbrecht; Ulrich Kortenkamp; Sandra Rebholz; Wolfgang Müller 004 (IWTA@LAK, 2013)

Escaping the Trap of Too Precise Topic Queries. - Paul Libbrecht (MKM/Calculemus/DML, 2013)

Formula Collection Mobile Apps Realized by Teachers. - Paul Libbrecht; Kerstin Schneider (CICM Workshops, 2014)

The plain text trap when copying mathematical formulae. - Paul Libbrecht; Matija Lokar (FM4M/MathUI/ThEdu/DP/WIP@CIKM, 2016)

Let me do it: towards the implementation of instructional patterns of ICT usage in schools. - Karl Barth; Kyriakoula Georgiou; Thanasis Hadzilacos; Paul Libbrecht; Anna Mavroudi; Wolfgang Müller 004; Nuno Otero (DeLFI, 2016)

Let Me Do It: Towards the Implementation of Sustainable Instructional Patterns. - Anna Mavroudi; Miltos Miltiadous; Paul Libbrecht; Wolfgang Müller 004; Thanasis Hadzilacos; Nuno Otero; Karl Barth; Koula Georgiou (ICALT, 2016)

Automatic Inspection of E-Portfolios for Improving Formative and Summative Assessment. - Wolfgang Müller 004; Sandra Rebholz; Paul Libbrecht (SETE@ICWL, 2016)

Visualisation of Complex Question Pools. - Florian Horn 002; Daniel Schiffner; Detlef Krömker; Daniel Bengs; Sabine Fabriz; Frank Goldhammer; Holger Horz; Ulf Kröhne; Paul Libbrecht; Jana Niemeyer; Alexander Tillmann; Sonja Franziska Christina Wenzel (DeLFI Workshops, 2018)

Private Document Editing with some Trust. - Aaron MacSween; Caleb James Delisle; Paul Libbrecht; Yann Flory (DocEng, 2018)

NLP for Student and Teacher: Concept for an AI based Information Literacy Tutoring System. - Paul Libbrecht; Thierry Declerck; Tim Schlippe; Thomas Mandl 001; Daniel Schiffner (CIKM (Workshops), 2020)

Facilitation of information literacy through a multilingual MOOC considering cultural aspects. - Stefan Dreisiebner; Anna Katharina Polzer; Lyn Robinson; Paul Libbrecht; Juan-José Boté-Vericad; Cristóbal Urbano; Thomas Mandl 001; Polona Vilar; Maja Zumer; Mate Juric; Franjo Pehar; Ivanka Stricevic (J. Documentation, 2021)

On the Creation of Classifiers to Support Assessment of E-Portfolios. - Alexander Gantikow; Andreas Isking; Paul Libbrecht; Wolfgang Müller 004; Sandra Rebholz (ISM, 2023)

KI-basierte Analyse von E-Portfolios. - Alexander Gantikow; Sara Durski; Andreas Isking; Paul Libbrecht; Wolfgang Müller 004; Simon Ostermann 002; Sandra Rebholz (DeLFI, 2024)

Transmitting ePortfolio Content for (AI) Analysis. - Kristina Hoeppner; Robert Lyon; Alexander Gantikow; Paul Libbrecht (DELFI Workshops, 2024)

Szenarien für eine automatische Analyse von E-Portfolios. - Andreas Isking; Paul Libbrecht (DELFI Workshops, 2024)

EPEPLA Workshop on E-Portfolios Evolution Powered by Language Analysis. - Paul Libbrecht; Kristina Hoeppner; Sandra Rebholz; Wolfgang Müller 004 (DELFI Workshops, 2024)

Author Intent: Eliminating Ambiguity in MathML. - David Carlisle; Paul Libbrecht; Moritz Schubotz; Neil Soiffer (ICCHP (1), 2024)

Evaluating Interactive Concept Maps Produced from E-Portfolios. - Alexander Gantikow; Andreas Isking; Wolfgang Müller 004; Paul Libbrecht; Sandra Rebholz (ISM, 2024)

Author Intent: Eliminating Ambiguity in MathML. - David Carliste; Paul Libbrecht; Moritz Schubotz; Neil Soiffer (CoRR, 2024)

Editorial: Generative AI in education. - Diego Zapata-Rivera; Ilaria Torre 001; Chien-Sing Lee; Antonio Sarasa-Cabezuelo; Ioana Ghergulescu; Paul Libbrecht (Frontiers Artif. Intell., 2024)