@unpublished{Hoeksema:97,
  author	= {Hoeksema, Jack},
  title		= {{C}orpus {S}tudy of {N}egative {P}olarity {I}tems},
  note		= {HTML version of a paper which appeared in the IV-V Jornades de corpus linguistics 1996-1997, Universitat Pompeu Fabre, Barcelona},
  urlpage	= {http://odur.let.rug.nl/~hoeksema/docs/barcelona.html},
  year		= {1997}
}