@InProceedings{tu-honavar:2012:EMNLP-CoNLL,
  author    = {Tu, Kewei  and  Honavar, Vasant},
  title     = {Unambiguity Regularization for Unsupervised Learning of Probabilistic Grammars},
  booktitle = {Proceedings of the 2012 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning},
  month     = {July},
  year      = {2012},
  address   = {Jeju Island, Korea},
  publisher = {Association for Computational Linguistics},
  pages     = {1324--1334},
  url       = {http://www.aclweb.org/anthology/D12-1121}
}