@inproceedings{ijcai1989p121,
  title     = {Alternatives for Classifier System Credit Assignment},
  author    = {Liepins, Gunar E. and Hilliard, Mike R. and Palmer, Mark R. and Rangarajan, Gita},
  booktitle = {Proceedings of the Eleventh International Joint Conference on
               Artificial Intelligence, {IJCAI-89}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {N. S. Sridharan},
  pages     = {756--760},
  year      = {1989},
  month     = {8},
  note      = {Machine Learning},
  url       = {https://ijcai.org/proceedings/1989/121},
}