@Unpublished{K-theory/0851,
  author = 	 {{Luca Barbieri-Viale and Bruno Kahn}},
  title = 	 {{On the derived category of 1-motives, I}},
  note = 	 {{Preprint, June 11, 2007, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0851/}}}
}