@inproceedings{Rivelles:2004W3,
  author = "Rivelles, Victor O.",
  title = "{Noncommutative Theories and Gravity}",
  doi = "10.22323/1.013.0029",
  booktitle = "Proceedings of Fourth International Winter Conference on Mathematical Methods in Physics {\textemdash} PoS(WC2004)",
  year = 2004,
  volume = "013",
  pages = "029"
}