@misc{sto-04-wikiped,
  author = {Jorge Stolfi},
  title = {Contributions to {Wikipedia}, the Free Encyclopaedia},
  url = {http://en.wikipedia.org/wiki/User:Jorge_Stolfi},
  howpublished = {WWW document},
  year = {2004-},
  altkeys = {sto-xx-wikiped}
}