@article{JMLR:v7:ross06a,
  author  = {David A. Ross and Richard S. Zemel},
  title   = {Learning Parts-Based Representations of Data},
  journal = {Journal of Machine Learning Research},
  year    = {2006},
  volume  = {7},
  number  = {84},
  pages   = {2369--2397},
  url     = {http://jmlr.org/papers/v7/ross06a.html}
}