@inproceedings{ijcai2005p260,
  title     = {The Evolution of Artificial Social Systems},
  author    = {Boella, Guido and van der Torre, Leendert W. N.},
  booktitle = {Proceedings of the Nineteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-05}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  pages     = {1655--1555},
  year      = {2005},
  url       = {https://ijcai.org/proceedings/2005/260},
}