@article{JMLR:v17:15-633,
  author  = {Mingyuan Zhou and Yulai Cong and Bo Chen},
  title   = {Augmentable Gamma Belief Networks},
  journal = {Journal of Machine Learning Research},
  year    = {2016},
  volume  = {17},
  number  = {163},
  pages   = {1--44},
  url     = {http://jmlr.org/papers/v17/15-633.html}
}