@InProceedings{filimonov-harper:2007:EMNLP-CoNLL2007,
  author    = {Filimonov, Denis  and  Harper, Mary},
  title     = {Recovery of Empty Nodes in Parse Structures},
  booktitle = {Proceedings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning (EMNLP-CoNLL)},
  pages     = {620--629},
  url       = {http://www.aclweb.org/anthology/D/D07/D07-1065}
}