Enterprise Portal: from Model to Implementation
  Portal technology can significantly improve the entire corporate information infrastructure. The approach proposed is based on rigorous and consistent (meta)data model and provides for efficient and accurate front-end integration of heterogeneous corporate applications including enterprise resource planning (ERP) systems, multimedia data warehouses and proprietary content databases. The methodology proposed embraces entire software lifecycle; it is illustrated by an enterprise-level Intranet portal implementation. 
Sergey V. Zykov