Howard Leung Frederick W. B. Li Rynson W. H. Lau Qing Li Advances in Web Based Learning - ICWL 2007, 6th International Conference, Edinburgh, UK, August 15-17, 2007, Revised Papers 4823 2008 978-3-540-78138-7 Lecture Notes in Computer Science Springer ICWL db/conf/icwl/icwl2007.html