@InProceedings{wang-EtAl:2012:ACL2012,
  author    = {Wang, William Yang  and  Mayfield, Elijah  and  Naidu, Suresh  and  Dittmar, Jeremiah},
  title     = {Historical Analysis of Legal Opinions with a Sparse Mixed-Effects Latent Variable Model},
  booktitle = {Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)},
  month     = {July},
  year      = {2012},
  address   = {Jeju Island, Korea},
  publisher = {Association for Computational Linguistics},
  pages     = {740--749},
  url       = {http://www.aclweb.org/anthology/P12-1078}
}