@Unpublished{K-theory/0880,
  author = 	 {{Daniel R. Grayson}},
  title = 	 {{A Brief Introduction to Algebraic K-theory}},
  note = 	 {{Preprint, January 22, 2008, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0880/}}}
}