@inproceedings{ijcai1975p26,
  title     = {Planning And Execution in Incompletely Specified Environments},
  author    = {Chien, Robert T. and Weissman, Steven J.},
  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     = {169--173},
  year      = {1975},
  note      = {Planning and Problem Solving},
  url       = {https://ijcai.org/proceedings/1975/26},
}