@inproceedings{ijcai1985p202,
  title     = {Refining and Extending the Procedural Net},
  author    = {Drummond, Mark},
  booktitle = {Proceedings of the Ninth International Joint Conference on
               Artificial Intelligence, {IJCAI-85}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Aravind Joshi},
  pages     = {1010--1011},
  year      = {1985},
  note      = {Planning and Search},
  url       = {https://ijcai.org/proceedings/1985/202},
}