1. The key HCI conferences are sponsored by the Association for Computing Machinery. They are SIGCHI (Special Interest Group on Computer-Human Interfaces) SIGGROUP (groupware and group processes) and CSCW (Computer-Supported Cooperative Work).
2. M. A. Smith personal communication.
3. M. A. Smith in Communities in Cyberspace M. A. Smith P. Kollock Eds. (Routledge London 1999) pp. 195–219.
4. M. Dodge R. Kitchin Mapping Cyberspace (Routledge London 2001).
5. S. Southwick Liszt: Searchable Directory of E-Mail Discussion Groups (report to BlueMarble Information Services Bloomington IN 1996).