@unpublished{Vasishthetal:06a,
  author	= {Vasishth, Shravan and Brüssow, Sven and Lewis, Richard L. and Drenhaus, Heiner},
  title		= {{Processing Polarity: How the Ungrammatical Intrudes on the Grammatical}},
  note		= {draft},
  year		= {2006},
  pdf		= {http://www.ling.uni-potsdam.de/~vasishth/Papers/npi1final.pdf}
}