@incollection{Downing96,
  author	= {Downing, Angela},
  editor	= {Butler, Christopher and Berry, Margaret and Fawcett, Robin and Huang, Guowen},
  year		= {1996},
  title		= {Discourse-pragmatic distinctions of the past in present in English and Spanish},
  booktitle	= {Meaning and form: systemic functional interpretations},
  publisher	= {Ablex},
  address	= {Norwood, N.J.},
  pages		= {509--533}
}