@Unpublished{K-theory/0221,
  author = 	 {{B. Kahn, M. Rost, and R. Sujatha}},
  title = 	 {{Unramified cohomology of quadrics, I (revised version)}},
  note = 	 {{Preprint, August 26, 1997, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0221/}}}
}