@inproceedings{BroersenBrunelAAMAS2007,
  author = {J.M. Broersen and J. Brunel},
  title = {Preservation of Obligations in a Temporal and Deontic Framework},
  booktitle = {Proceedings of the 6th International Joint Conference on Autonomous Agents and Multi-Agent Systems (AAMAS-2007)},
  publisher = {ACM Press},
  pages = {},
  editor = {},
  series    = {},
  volume    = {},
  year      = {2007},
  isbn      = {}
}