@inproceedings{ijcai2001p29,
  title     = {The SG Family: Extensions of Simple Conceptual Graphs},
  author    = {Baget, Jean-François and Mugnier, Marie-Laure},
  booktitle = {Proceedings of the Seventeenth International Joint Conference on
               Artificial Intelligence, {IJCAI-01}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  pages     = {205--211},
  year      = {2001},
  url       = {https://ijcai.org/proceedings/2001/29},
}