L. Müller, B. Krogstie, and A. Schmidt. Context and Technology Enhanced Learning (ConTEL): Theory, methodology and design, ECTEL 2011, Palermo, Italy, (2011)
L. Müller, V. Pelayo, C. Kunzmann, and A. Schmidt. Second International Workshop on Human Behavior Understanding (HBU 2011), volume 7065 of Lecture Notes in Computer Science, page 93-103. Springer, (2011)