Legal Integration of Energy Markets: EUI Series A - Policy & Economic Analysis for US Cross-Border E-Commerce | Energy Law Books for Professionals & Researchers" (注:原标题中的"005"属于系列编号,在SEO中通常不具关键词价值故删除;"European University Institute"缩写为知名缩写"EUI";补充了内容类型和政策经济分析方向;最后添加跨境电商场景说明和专业读者定位)