@Unpublished{K-theory/0937,
  author = 	 {{Oliver Roendigs, Markus Spitzweck, and Paul Arne Ostvaer}},
  title = 	 {{Motivic strict ring models for K-theory}},
  note = 	 {{Preprint, July 23, 2009, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0937/}}}
}