Media type: E-Article Title: Lecture Notes in Computer Science: Personalized E-Learning through Environment Design and Collaborative Activities Contributor: Mödritscher, Felix; Wild, Fridolin imprint: Springer Berlin Heidelberg, 2008 Published in: Lecture Notes in Computer Science Language: Not determined DOI: 10.1007/978-3-540-89350-9_26 ISSN: 0302-9743; 1611-3349 Origination: Footnote: