@inproceedings{ijcai1975p76,
  title     = {A Multi-Level Organization For Problem Solving Using Many, Diverse, Cooperating Sources Of Knowledge},
  author    = {Erman, Lee D. and Lesser, Victor R.},
  booktitle = {Proceedings of the Fourth International Joint Conference on
               Artificial Intelligence, {IJCAI-75}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Patrick Winston and Carl Hewitt},
  pages     = {483--489},
  year      = {1975},
  note      = {Speech Understanding},
  url       = {https://ijcai.org/proceedings/1975/76},
}