@inproceedings{ijcai1975p53,
  title     = {Form Dynamic Programming To Search Algorithms With Functional Costs},
  author    = {Martelli, Alberto and Montanari, Ugo},
  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     = {345--349},
  year      = {1975},
  note      = {Search Techniques},
  url       = {https://ijcai.org/proceedings/1975/53},
}