@Unpublished{K-theory/0545,
  author = 	 {{Kanetomo Sato}},
  title = 	 {{An etale tate twist with finite coefficients and duality in mixed characteristics}},
  note = 	 {{Preprint, February 9, 2002, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0545/}}}
}