@inproceedings{ijcai1971p6,
  title     = {Challenge to Artificial Intelligence: Programming Problems to be Solved},
  author    = {Sammet, Jean E.},
  booktitle = {Proceedings of the Second International Joint Conference on
               Artificial Intelligence, {IJCAI-71}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {D.C. Cooper},
  pages     = {59--64},
  year      = {1971},
  url       = {https://ijcai.org/proceedings/1971/6},
}