1 Introduction.- 2 Case-based Reasoning.- 3 E-Commerce.- 4 Intelligent Agents and Multiagent Systems.- 5 A General Theory of Case Based Reasoning.- 6 CBR in E-Commerce.- 7 Case Based Reasoning in Multiagent Systems.- 8 Multiagent E-Commerce.- 9 Integration of CBR and MAS in E-Commerce.- 10 Concluding Remarks.- 11 Bibliography.