P. Marshall. TEI '07: Proceedings of the 1st international conference on Tangible and embedded interaction, page 163--170. New York, NY, USA, ACM, (2007)
S. Wilson, O. Liber, M. Johnson, P. Beauvoir, P. Sharples, and C. Milligan. Proceedings of the 2nd International Workshop on Learner-Oriented Knowledge Management and KM-Oriented Learning (LOKMOL 06), in conjunction with the First European Conference on Technology-Enhanced Learning (ECTEL 06), page 67-76. (Oct 2, 2006)
S. Wilson, O. Liber, M. Johnson, P. Beauvoir, P. Sharples, and C. Milligan. Proceedings of the 2nd International Workshop on Learner-Oriented Knowledge Management and KM-Oriented Learning (LOKMOL 06), in conjunction with the First European Conference on Technology-Enhanced Learning (ECTEL 06), page 67-76. (Oct 2, 2006)