@Article{Modeling_Conversation_Policies_using_Permissions_and_Obligations,
  author = "Lalana  Kagal and Tim  Finin",
  title = "{Modeling Conversation Policies using Permissions and Obligations}",
  month = "April",
  year = "2007",
  pages = "187-206",
  number = "2",
  volume = "14",
  journal = "Journal of Autonomous Agents and Multi-Agent Systems",
}