Social and Computing Solutions for Voluntary Communities of Practice: Designing Community Space. - Michael J. Muller; Linda Carotenuto; Michael A. Fontaine; Jessica Friedman; Helene Newberg; Matthew Simpson; Jason Slusher; Kenneth Stevenson (WETICE, 1999)

Electronic communities: places and spaces, contents and boundaries. - Michael J. Muller; Jessica Friedman (CHI Extended Abstracts, 2000)