@article{JMLR:v8:pan07a,
  author  = {Wei Pan and Xiaotong Shen},
  title   = {Penalized Model-Based Clustering with Application to Variable Selection},
  journal = {Journal of Machine Learning Research},
  year    = {2007},
  volume  = {8},
  number  = {41},
  pages   = {1145--1164},
  url     = {http://jmlr.org/papers/v8/pan07a.html}
}