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.