@Unpublished{K-theory/0873,
  author = 	 {{Sunil K. Chebolu, J. Daniel Christensen, and Jan Minac}},
  title = 	 {{Freyd's generating hypothesis for groups with periodic cohomology}},
  note = 	 {{Preprint, October 17, 2007, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0873/}}}
}