@InProceedings{Wang:2012:ACL,
  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 (ACL 2012)},
  month     = {July},
  year      = {2012},
  address   = {Jeju Island, Korea},
  publisher = {ACL}
}