@InProceedings{cohen-collins:2014:P14-1,
  author    = {Cohen, Shay B.  and  Collins, Michael},
  title     = {A Provably Correct Learning Algorithm for Latent-Variable PCFGs},
  booktitle = {Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)},
  month     = {June},
  year      = {2014},
  address   = {Baltimore, Maryland},
  publisher = {Association for Computational Linguistics},
  pages     = {1052--1061},
  url       = {http://www.aclweb.org/anthology/P/P14/P14-1099}
}