@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", note = "DOI: 10.1007/s10458-006-0013-z ", pages = "187-206", number = "2", volume = "14", journal = "Journal of Autonomous Agents and Multi-Agent Systems", publisher = "Springer", }