Foundations of Multi-agent Systems.- Perspectives on Organizations in Multi-agent Systems.- Multi-agent Infrastructure, Agent Discovery, Middle Agents for Web Services and Interoperation.- Logical Foundations of Agent-Based Computing.- Standardizing Agent Communication.- Standardizing Agent Interoperability: The FIPA Approach.- Distributed Problem Solving and Planning.- Automated Negotiation and Decision Making in Multiagent Environments.- Agents? Advanced Features for Negotiation and Coordination.- Social Behaviour, Meta-reasoning, and Learning.- Towards Heterogeneous Agent Teams.- Social Knowledge in Multi-agent Systems.- Machine Learning and Inductive Logic Programming for Multi-agent Systems.- Relational Reinforcement Learning.- From Statistics to Emergence: Exercises in Systems Modularity.- Emotions and Agents.- Applications.- Multi-agent Coordination and Control Using Stigmergy Applied to Manufacturing Control.- Virtual Enterprise Modeling and Support Infrastructures: Applying Multi-agent System Approaches.- Specialised Agent Applications.- Agent-Based Modelling of Ecosystems for Sustainable Resource Management.- Cooperating Physical Robots: A Lesson in Playing Robotic Soccer.- A Multi-agent Study of Interethnic Cooperation.