@article{JMLR:v15:tan14b,
  author  = {Kean Ming Tan and Palma London and Karthik Mohan and Su-In Lee and Maryam Fazel and Daniela Witten},
  title   = {Learning Graphical Models With Hubs},
  journal = {Journal of Machine Learning Research},
  year    = {2014},
  volume  = {15},
  number  = {95},
  pages   = {3297--3331},
  url     = {http://jmlr.org/papers/v15/tan14b.html}
}