Cox05'

@article{DBLP:journals/jis/Cox05,
  author    = {Andrew Cox},
  title     = {What are communities of practice? A comparative review of
               four seminal works},
  journal   = {J. Information Science},
  volume    = {31},
  number    = {6},
  year      = {2005},
  pages     = {527-540},
  ee        = {http://dx.doi.org/10.1177/0165551505057016},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}