1. Bergqvist, J. and Ljungberg, ComCenter: a Person Oriented Approach to Mobile Communication, CHI2000 Extended Abstract, pp. 123–124 (2000).
2. Schmidt, A., Takaluoma, A. and Mantyjarvi, J., Contex-Aware Telephony Over WAP, Journal of Personal Technologies, Vol. 4, No. 4, pp. 225–229 (2000).
3. Pedersen, E.R., Calls.calm: Enabling Caller and Callee to Collaborate, CHI2001 Extended Abstract, pp. 235–236 (2001).
4. Tang, J., Yankelovich, N., Begole, J., Van Kleek, M., Li, F. and Bhalodia, J., Con-Nexus to Awarenex: Extending awareness to mobile users, Proceedings of CHI2001, pp. 221–228 (2001).
5. Milewski, E., A and Smith, M, T, Providing Presence Cues to Telephone Users, Proceedings of CSCW2000 (2000).