Thomas Skylogiannis Grigoris Antoniou Nick Bassiliades Guido Governatori DR-NEGOTIATE - A System for Automated Agent Negotiation with Defeasible Logic-Based Strategies. 44-49 2005 conf/eee/2005 EEE http://doi.ieeecomputersociety.org/10.1109/EEE.2005.61 db/conf/eee/eee2005.html#SkylogiannisABG05