@Unpublished{K-theory/0913,
  author = 	 {{J. Wildeshaus}},
  title = 	 {{f-categories and Tate motives}},
  note = 	 {{Preprint, October 9, 2008, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0913/}}}
}