Maurice Hendrix, Paul De Bra, Mykola Pechenizkiy, David Smits, Alexandra I. Cristea. Defining Adaptation in a Generic Multi Layer Model: CAM: The GRAPPLE Conceptual Adaptation Model. In Pierre Dillenbourg, Marcus Specht, editors, Times of Convergence. Technologies Across Learning Contexts, Third European Conference on Technology Enhanced Learning, EC-TEL 2008, Maastricht, The Netherlands, September 16-19, 2008. Proceedings. Volume 5192 of Lecture Notes in Computer Science, pages 132-143, Springer, 2008. [doi]