Derntl, Michael, and Renate Motschnig-Pitrik. “Symposium 12: A Pattern Approach to Person-Centered E-Learning Based on Theory-Guided Action Research ”. Proceedings of the International Conference on Networked Learning 4 (April 5, 2004): 303–311. Accessed February 19, 2026. https://journals.aau.dk/index.php/nlc/article/view/9654.