S. Benford, and L. Fahlén. ECSCW'93: Proceedings of the third conference on European Conference on Computer-Supported Cooperative Work, page 109--124. Kluwer Academic Publishers, (1993)
V. Bayon, T. Rodden, C. Greenhalgh, and S. Benford. Proceedings of the First International Conference on Pervasive
Computing, volume 2414 of Lecture Notes in Computer Science, page 69--83. Zurich, Springer-Verlag, (August 2002)
S. Benford, D. Snowdon, A. Colebourne, J. O'Brien, and T. Rodden. GROUP '97: Proceedings of the international ACM SIGGROUP conference on Supporting group work, page 71-80. New York, NY, USA, ACM Press, (1997)