@inproceedings{ijcai1999p176,
  title     = {Rights, Duties and Commitments between Agents},
  author    = {van der Torre, Leendert W. N. and Tan, Yao-Hua},
  booktitle = {Proceedings of the Sixteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-99}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Thomas Dean},
  pages     = {1239--1245},
  year      = {1999},
  note      = {Software Agents},
  url       = {https://ijcai.org/proceedings/1999/176},
}