@misc{hen-09-wikigrow,
  author = {User:HenkvD},
  title = {Wikipedia:{Modelling} {Wikipedia's} growth},
  url = {http://en.wikipedia.org/wiki/Wikipedia:Modelling_Wikipedia's_growth},
  howpublished = {English Wikipedia internal article. Acessed on 2009-11-29. See also the user's personal page on Wikipedia.},
  year = 2009
}