The Statistics of Extrasolar Planets: Results from the Keck Survey
  We present an analysis of precision radial velocity measurements for 580 stars from the Keck survey. We first discuss the detection threshold of the survey, and then describe a Bayesian approach to constrain the distribution of extrasolar planet orbital parameters using both detections and upper limits. 
Andrew Cumming, Geoffrey W. Marcy, R. Paul Butler, Steven S. Vogt