@incollection{Stalnaker,
  author	= {Stalnaker, Robert C.},
  editor	= {Cole, P.},
  year		= {1978},
  title		= {Assertion},
  booktitle	= {Pragmatics},
  series	= {Syntax and Semantics},
  volume	= {9},
  pages		= {315--332},
  publisher	= {Academic Press},
  address	= {New York}
}