Foundations of Dialogues.- Some Preliminary Steps Towards a Meta-theory for Formal Inter-agent Dialogues.- Towards a Formal and Implemented Model of Argumentation Schemes in Agent Communication.- Formal Dialectic Specification.- A Modal Semantics for an Argumentation-Based Pragmatics for Agent Communication.- Layered Strategies and Protocols for Argumentation-Based Agent Interaction.- Belief Revision.- Revising Beliefs Through Arguments: Bridging the Gap Between Argumentation and Belief Revision in MAS.- An Argument-Based Framework to Model an Agent's Beliefs in a Dynamic Environment.- Argumentation in Bayesian Belief Networks.- Persuasion & Deliberation.- Specifying and Implementing a Persuasion Dialogue Game Using Commitments and Arguments.- A Dialogue Game Protocol for Multi-agent Argument over Proposals for Action.- A Denotational Semantics for Deliberation Dialogues.- Negotiation.- Bargaining and Argument-Based Negotiation: Some Preliminary Comparisons.- On the Generation of Bipolar Goals in Argumentation-Based Negotiation.- A Bayes Net Approach to Argumentation Based Negotiation.- Negotiation Among DDeLP Agents.- Strategic Issues.- Is It Worth Arguing?.- When Is It Okay to Lie? A Simple Model of Contradiction in Agent-Based Dialogues.