@Unpublished{K-theory/0379,
  author = 	 {{ Ralph L. Cohen and Paulo Lima-Filho}},
  title = 	 {{An algebraic geometric realization of the Chern character}},
  note = 	 {{Preprint, December 18, 1999, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0379/}}}
}