@InProceedings{karttunen:1985:ACL,
  author    = {Lauri Karttunen},
  title     = {Structure Sharing with Binary Trees},
  booktitle = {Proceedings of the 23rd Annual Meeting of the Association for Computational Linguistics},
  month     = {July},
  year      = {1985},
  address   = {Chicago, Illinois, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {133--136},
  url       = {http://www.aclweb.org/anthology/P85-1016},
  doi       = {10.3115/981210.981226}
}