Addendum on the scoring of Gaussian directed acyclic graphical models
  We provide a correction to the expression for scoring Gaussian directed acyclic graphical models derived in Geiger and Heckerman [Ann. Statist. 30 (2002) 1414-1440] and discuss how to evaluate the score efficiently. 
Jack Kuipers, Giusi Moffa, David Heckerman
stat.ML stat.ME