@Unpublished{K-theory/0081,
  author = 	 {{A. J. de Jong}},
  title = 	 {{Smoothness, semi-stability and alterations}},
  note = 	 {{Preprint, August 21, 1995, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0081/}}}
}