@InProceedings{dieugenio-EtAl:2005:ACL,
  author    = {Di Eugenio, Barbara  and  Fossati, Davide  and  Yu, Dan  and  Haller, Susan  and  Glass, Michael},
  title     = {Aggregation Improves Learning: Experiments in Natural Language Generation for Intelligent Tutoring Systems},
  booktitle = {Proceedings of the 43rd Annual Meeting of the Association for Computational Linguistics (ACL'05)},
  month     = {June},
  year      = {2005},
  address   = {Ann Arbor, Michigan},
  publisher = {Association for Computational Linguistics},
  pages     = {50--57},
  url       = {http://www.aclweb.org/anthology/P05-1007},
  doi       = {10.3115/1219840.1219847}
}