Ladel, S., & Kortenkamp U.  (2013).  An activity-theoretic approach to multi-touch tools in early maths learning.  The International Journal for Technology in Mathematics Education. 20, 

Ladel, S., & Kortenkamp U.  (2013).  Designing a technology based learning environment for place value using artifact-centric activity theory.  (Lindmeier, A. M., & Heinze A., Ed.).Proceedings of the 37th conference of the International Group for the Psychology of Mathematics Education. Mathematics learning across the life span. 1, 188-192.

Libbrecht, P., & Kortenkamp U.  (2013).  The Role of Metadata in the Design of Educational Activities.  Proceedings of CERME 8, Antalya.  

Libbrecht, P., Kortenkamp U., Rebholz S., & Müller W.  (2013).  Tales of a Companion Teacher Analytics.  (Vatrapu, R., Ed.).Proceedings of the 2nd International Workshop on Teaching Analytics (IWTA-2013).  

Bescherer, C., Herding D., Kortenkamp U., Müller W., & Zimmermann M.  (2012).  E-learning Tools with Intelligent Assessment and Feedback.  (Graf, S., Lin F., Kinshuk, & McGreal R., Ed.).Intelligent and Adaptive Learning Systems: Technology Enhanced Support for Learners and Teachers.  

Ladel, S., & Kortenkamp U.  (2011).  An activity-theoretic approach to multi-touch tools in early maths learning.  Proceedings of ATATEMLO 2011 in Paris.  

Ladel, S., & Kortenkamp U.  (2011).  Finger-Symbol-Sets and Multi-Touch for a better understanding of numbers and operations.  Proceedings of CERME 7, Rzeszow.  

Ladel, S., & Kortenkamp U.  (2011).  Implementation of a multi-touch-environment supporting finger symbol sets.  Proceedings of CERME 7, Rzeszow.  

Kortenkamp, U.  (2011).  Interoperable Interactive Geometry for Europe.  The Electronic Journal of Mathematics and Technology. 5, 

Kortenkamp, U.  (2011).  Interoperable Interactive Geometry for Europe.  The Electronic Journal of Mathematics and Technology. 5, 

Kortenkamp, U., & Blessing A. M.  (2011).  VideoClipQuests as an E-Learning Pattern.  (Kohls, C., & Wedekind J., Ed.).Investigations on E-Learning Patterns: Context Factors, Problems, and Solutions.  237-248.

Müller, W., & Kortenkamp U.  (2010).  Learning Programming with Ruby.  Proceedings of the IFIP Workshop "New developments in ICT and Informatics education''.  

Richter-Gebert, J., & Kortenkamp U.  (2010).  The power of scripting: DGS meets programming.  Acta Didactica Napocensia. 3, 67-78.

Kortenkamp, U., & Dohrmann C.  (2010).  User Interface Design for Dynamic Geometry Software.  Proceedings of CADGME 2009. 3, 59-66.

Blessing, A. M., & Kortenkamp U.  (2010).  VideoClipQuests as a New Setup For Learning.  (Spector, M. J., Ifenthaler D., Isaías P., Kinshuk, & Sampson D. G., Ed.).Learning and Instruction in the Digital Age: Making a Difference through Cognitive Approaches, Technology-facilitated Collaboration and Assessment, and Personalized Communications.  

Kortenkamp, U., & Richter-Gebert J.  (2009).  Blended Experimentation with DGS.  Proceedings of CADGME 2009.  

Spannagel, C., & Kortenkamp U.  (2009).  Demonstrating, Guiding, and Analyzing Processes in Dynamic Geometry Systems.  (Bardini, C., Fortin C., Oldknow A., & Vagost D., Ed.).Proceedings of the 9th International Conference on Technology in Mathematics Teaching.  

El-Demerdash, M., & Kortenkamp U.  (2009).  The Effectiveness of an Enrichment Program Using Dynamic Geometry Software in Developing Mathematically Gifted Students' Geometric Creativity.  (Bardini, C., Fortin C., Oldknow A., & Vagost D., Ed.).Proceedings of the 9th International Conference on Technology in Mathematics Teaching.  

Abánades, M., Botana F., Escribano J., Hendriks M., Kortenkamp U., Kreis Y., et al.  (2009).  The Intergeo File Format in Progress.  Proceedings of the 22nd OpenMath Meeting.  

Abánades, M., Botana F., Escribano J., Hendriks M., Kortenkamp U., Kreis Y., et al.  (2009).  The Intergeo File Format in Progress.  Proceedings of the 22nd OpenMath Meeting.  

Libbrecht, P., Kortenkamp U., & Mercat C.  (2009).  I2Geo: a Web-Library of Interactive Geometry.  (Sojka, P., Ed.).Proceedings of the 2nd Workshop Towards a Digital Mathematics Library (DML-2009).  

Kortenkamp, U., Blessing A. M., Dohrmann C., Kreis Y., Libbrecht P., & Mercat C.  (2009).  Interoperable Interactive Geometry For Europe ? First Technological and Educational Results and Future Challenges of the Intergeo Project.  Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France).  

Kortenkamp, U., Blessing A. M., Dohrmann C., Kreis Y., Libbrecht P., & Mercat C.  (2009).  Interoperable Interactive Geometry For Europe ? First Technological and Educational Results and Future Challenges of the Intergeo Project.  Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France).  

Fest, A., & Kortenkamp U.  (2009).  Process Orientated Learning Environments For Interactive Geometry Lessons.  (Bardini, C., Fortin C., Oldknow A., & Vagost D., Ed.).Proceedings of the 9th International Conference on Technology in Mathematics Teachingh International Conference on Technology in Mathematics Teaching.  

Ladel, S., & Kortenkamp U.  (2009).  Realisations of MERS (Multiple Extern Representations) and MELRS (Multiple Equivalent Linked Representations) in Elementary Mathematics Software.  (Durand-Guerrier, V., Soury-Lavergne S., & Arzarello F., Ed.).Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France).  

Fest, A., & Kortenkamp U.  (2009).  Teaching Graph Algorithms with Visage.  Teaching Mathematics and Computer Science. 7, 35-50.

Kortenkamp, U., & Rolka K.  (2009).  Using Technology in the Teaching and Learning of Box Plots.  (Durand-Guerrier, V., Soury-Lavergne S., & Arzarello F., Ed.).Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France).  

Kortenkamp, U., Dohrmann C., Kreis Y., & Dording C.  (2009).  Using the Intergeo Platform for Teaching and Research.  (Bardini, C., Fortin C., Oldknow A., & Vagost D., Ed.).Proceedings of the 9th International Conference on Technology in Mathematics Teaching.  

Kortenkamp, U., Dohrmann C., Kreis Y., & Dording C.  (2009).  Using the Intergeo Platform for Teaching and Research.  (Bardini, C., Fortin C., Oldknow A., & Vagost D., Ed.).Proceedings of the 9th International Conference on Technology in Mathematics Teaching.  

Blessing, A., & Kortenkamp U.  (2009).  VideoClipQuests as an E-Learning Pattern.  Proceedings of the E-Learning Patterns Workshop 2009.  

Ladel, S., & Kortenkamp U.  (2009).  Virtuell-enaktives Arbeiten mit der ?Kraft der Fünf''.  MNUprimar.  

Blessing, A. M., & Kortenkamp U.  (2008).  Der Einsatz von VideoClipQuests in Moodle.  Vorträge auf der 5. Internationalen Moodle Konferenz 2008 in Klagenfurt.  

Kortenkamp, U., & Fest A.  (2008).  From CAS/DGS Integration to Algorithms in Educational Math Software.  Proceedings of ATCM 08.  

Kortenkamp, U.  (2008).  A Technology Based Approach to Discrete Mathematics in the Classroom.  (Campbell, S., & Grenier D., Ed.).Proceedings of ICME-11, TSG 15.  

Blessing, A., & Kortenkamp U.  (2008).  VideoClipQuests as a New Setup For Learning.  (Kinshuk, Sampson D. G., Spector M. J., Isaías P., & Ifenthaler D., Ed.).Proceedings of the IADIS International Conference on Cognition and Exploratory Learning in Digital Age (CELDA 2008).  343?346.

Kortenkamp, U.  (2007).  Combining CAS and DGS ? Towards Algorithmic Thinking.  (Li, S., Wang D., & Zhang J-Z., Ed.).Symbolic Computation and Education.  150-173.

Kortenkamp, U.  (2007).  Guidelines for Using Computers Creatively in Mathematics Education.  (Ko, K H., & Arganbright D., Ed.).Enhancing University Mathematics: Proceedings of the First KAIST International Symposium on Teaching. 14, 129?138.

Spannagel, C., & Kortenkamp U.  (2007).  Prozesse beim Lernen mit DGS: Aufzeichnung, Wiedergabe, Analyse.  (Ludwig, M., Ed.).Tagungsband des Arbeitskreis Geometrie der GDM.  

Kortenkamp, U.  (2007).  Punkt- und Achsenspiegelungen mit DGS.  (Beckmann, A., Ed.).Lernen mit Dynamischen Geometriesystemen. 3, 5-28.

Kortenkamp, U.  (2006).  Algorithmische Geometrie im Unterricht.  Der Mathematikunterricht. 52, 32-39.

Müller, W., Bescherer C., Kortenkamp U., & Spannagel C.  (2006).  Intelligent Computer-aided Assessment in the Math Classroom: State-of-the-art and Perspectives.  Proceedings of the IFIP WG 3.1, 3.3, & 3.5 Joint Conference Imagining the future for ICT and Education, Alesund, Norway.  

Kortenkamp, U.  (2006).  Paving the Alexanderplatz Efficiently with a quasi-periodic tiling.  (Duvernoy, S., & Pedemonte O., Ed.).Nexus VI: Architecture and Mathematics.  57-62.

Geschke, A., Kortenkamp U., Lutz-Westphal B., & Materlik D.  (2005).  Visage ? Visualization of Algorithms in Discrete Mathematics.  Zentralblatt für Didaktik der Mathematik. 37, 395-401.

Kortenkamp, U.  (2004).  Experimental mathematics and proofs ? what is secure mathematical knowledge?.  Zentralblatt für Didaktik der Mathematik. 36, 61?66.

Kortenkamp, U., & Materlik D.  (2004).  Geometry teaching in wireless classroom environments using Java and J2ME.  Science of Computer Programming. 53, 71?85.

Kortenkamp, U., & Materlik D.  (2004).  Pen-based input of geometric constructions.  (Libbrecht, P., Ed.).Proceedings of MathUI 2004.  

Kortenkamp, U., & Richter-Gebert J.  (2004).  Using Automatic Theorem Proving to Improve the Usability of Geometry Software.  (Libbrecht, P., Ed.).Proceedings of MathUI 2004.  

Kortenkamp, U., & Materlik D.  (2004).  Vernetztes Lehren und Lernen im Mathematikunterricht.  (Fellbaum, K., Rebensburg K., & Schwill A., Ed.).Grundfragen multimedialen Lehrens und Lernens. Tagungsband des 2. Workshops GML2004.  

Richter-Gebert, J., & Kortenkamp U. H.  (2002).  Complexity issues in Dynamic Geometry.  (Cucker, F., & Rojas M. J., Ed.).Foundations of Computational Mathematics (Proceedings of the Smale Fest 2000).  

Kortenkamp, U.  (2002).  Making the move: The next version of Cinderella.  (Cohen, A. M., Gao X-S., & Takayama N., Ed.).Proceedings of the First International Congress of Mathematical Software.  208?216.

Kortenkamp, U., & Richter-Gebert J.  (2001).  Decision complexity in Dynamic Geometry.  (Wang, D., Ed.).Proceedings of ADG 2000.  167?172.

Kortenkamp, U.  (2001).  Die interaktive Geometrie-Software Cinderella.  (Beck, U., & Sommer W., Ed.).Tagungsband Learntec 2001. 2, 525?532.

Richter-Gebert, J., & Kortenkamp U.  (2001).  A dynamic setup for elementary geometry.  Proceedings of MTCM 2000.  

Kortenkamp, U.  (2001).  The future of mathematical software.  Proceedings of MTCM 2000.  

Richter-Gebert, J., & Kortenkamp U.  (2001).  Grundlagen Dynamischer Geometrie.  (Henn, H-W., Elschenbroich H-J., & Gawlick T., Ed.).Zeichnung ? Figur ? Zugfigur.  123?144.

Kortenkamp, U., & Richter-Gebert J.  (2000).  Decision complexity in Dynamic Geometry.  (Wang, D., Ed.).Proceedings of ADG 2000. 3, 216?220.

Richter-Gebert, J., & Kortenkamp U.  (2000).  Dynamic aspects in computational geometry.  (Montes, A., Ed.).Proceedings of the EACA 2000.  51?61.

Richter-Gebert, J., & Kortenkamp U.  (2000).  Euklidische und nicht-Euklidische Geometrie in Cinderella.  Journal für Mathematikdidaktik. 22, 303?324.

Kortenkamp, U. H., & Richter-Gebert J.  (1999).  Das Cinderella-Projekt.  (Maffeis, S., Toenniessen F., & Zeidler C., Ed.).Erfahrungen mit Java.  381?401.

Richter-Gebert, J., & Kortenkamp U. H.  (1999).  Dynamic Geometry I: The Problem of Continuity.  Abstracts 15th European Workshop Comput. Geom..  51?53.

Kortenkamp, U. H., & Richter-Gebert J.  (1999).  Dynamic Geometry II: Applications.  Abstracts 15th European Workshop Comput. Geom..  109?111.

Kortenkamp, U. H., & Richter-Gebert J.  (1998).  Geometry and education in the Internet age.  (Ottmann, T., & Tomek I., Ed.).Ed-Media & Ed-Telecom 98. Proceedings of the Tenth World Conference on Educational Multimedia and Hypermedia & World Conference on Educational Telecommunications, Freiburg, Germany, June 20-25, 1998.  

Kortenkamp, U.  (1997).  Every simplicial polytope with at most d+4 vertices is a quotient of a neighborly polytope.  Discrete & Computational Geometry. 18, 455?462.

Kortenkamp, U., Richter-Gebert J., Sarangarajan A., & Ziegler G. M.  (1997).  Extremal properties of 0/1-polytopes.  Discrete & Computational Geometry. 17, 439?448.

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