M. da Graca Pimentel, G. Abowd, and Y. Ishiguro. HYPERTEXT '00: Proceedings of the eleventh ACM on Hypertext and hypermedia, page 39--48. New York, NY, USA, ACM, (2000)
M. da Graca Pimentel, G. Abowd, and Y. Ishiguro. HYPERTEXT '00: Proceedings of the eleventh ACM on Hypertext and hypermedia, page 39--48. New York, NY, USA, ACM, (2000)