@article{Theis2011a,
  author = "L. Theis and S. Gerwinn and F. Sinz and M. Bethge",
  title = "In All Likelihood, Deep Belief Is Not Enough",
  year = 2011,
  journal = "Journal of Machine Learning Research",
  volume = 12,
  month = "Nov",
  keywords = "natural image statistics, deep belief networks, boltzmann machines, deep learning"
}