@Unpublished{K-theory/0671,
  author = 	 {{Ivan Panin}},
  title = 	 {{Rationally isotropic quadratic spaces are locally isotropic}},
  note = 	 {{Preprint, December 6, 2003, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0671/}}}
}