@Unpublished{K-theory/0484,
  author = 	 {{A. Lazarev}},
  title = 	 {{Homotopy theory of A-infinity ring spectra and applications to MU-modules}},
  note = 	 {{Preprint, April 23, 2001, K-theory Preprint Archives, http://www.math.uiuc.edu/K-theory/0484/}}}
}