@InProceedings{liu-EtAl:2000:ACL,
  author    = {Ting Liu  and  Ming Zhou  and  Jianfeng Gao  and  Endong Xun  and  Changning Huang},
  title     = {PENS: A Machine-aided English Writing System for Chinese Users},
  booktitle = {Proceedings of the 38th Annual Meeting of the Association for Computational Linguistics},
  month     = {October},
  year      = {2000},
  address   = {Hong Kong},
  publisher = {Association for Computational Linguistics},
  pages     = {529--536},
  url       = {http://www.aclweb.org/anthology/P00-1067},
  doi       = {10.3115/1075218.1075285}
}