@Article{chung-cl13,
  author = {Tagyoung Chung and Licheng Fang and Daniel Gildea and Daniel
  \v{S}tefankovi\v{c}},
  title = {Sampling Tree Fragments from Forests},
  journal = {Computational Linguistics},
  year = {2013},
  volume = {to appear},
  URL = {http://www.cs.rochester.edu/~gildea/pubs/chung-cl13.pdf}
}