@InProceedings{scott-EtAl:2011:Demos,
  author    = {Scott, Matthew R.  and  Liu, Xiaohua  and  Zhou, Ming  and  Engkoo Team, Microsoft},
  title     = {Engkoo: Mining the Web for Language Learning},
  booktitle = {Proceedings of the ACL-HLT 2011 System Demonstrations},
  month     = {June},
  year      = {2011},
  address   = {Portland, Oregon},
  publisher = {Association for Computational Linguistics},
  pages     = {44--49},
  url       = {http://www.aclweb.org/anthology/P11-4008}
}