Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results by C. L. Bennett and others (2012 preprint; 2013 journal publication)

The December 20, 2012 preprint was available before the January 2013 examination. Its abstract reports combined cosmic microwave background, baryon acoustic oscillation and Hubble-constant model fits, including spatial curvature and cosmic age. These combined-data constraints should not be attributed to the cosmic microwave background alone.