Carsten Riggelsen Approximation Methods for Efficient Learning of Bayesian Networks 2008 IOS Press Frontiers in Artificial Intelligence and Applications 168 1-137 978-1-58603-821-2 http://www.booksonline.iospress.nl/Content/View.aspx?piid=7862 http://www.booksonline.iospress.nl/Content/View.aspx?piid=7862