@inproceedings{ijcai1977p109,
  title     = {Subgoal Protection and Unraveling During Plan Synthesis},
  author    = {Rieger, Chuck and London, Philip},
  booktitle = {Proceedings of the Fifth International Joint Conference on
               Artificial Intelligence, {IJCAI-77}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Raj Reddy},
  pages     = {487--492},
  year      = {1977},
  note      = {Problem-solving and Search},
  url       = {https://ijcai.org/proceedings/1977/109},
}