@article{Ferrara-etal91,
  author	= {Ferrara, Kathleen and Bunner, Hans and Whittemore, Greg},
  year		= {1991},
  title		= {Interactive written discourse as an emergent register},
  journal	= {Written Communication},
  volume	= {8},
  number	= {1},
  pages		= {8--34}
}