@book{Koller:2009:PGM:1795555,
 author = {Koller, Daphne and Friedman, Nir},
 title = {Probabilistic Graphical Models: Principles and Techniques - Adaptive Computation and Machine Learning},
 year = {2009},
 isbn = {0262013193, 9780262013192},
 publisher = {The MIT Press},
}
@book{Blei:2015:BasicsPGM,
 author = {David M. Blei},
 title = {The Basics of Graphical Models},
 year = {2015},
 isbn = {},
 publisher = {Columbia Univeristy}
 }
 @book{Jordan:2003:PGM,
  author = {Micheal I. Jordan},
  title = {An Introduction to Probablistic Graphical Models},
  year = {2003},
  isbn = {},
  publisher = {University of California, Berkley}
  }