Mariano Fernandez-Lopez, Asun Gomez-Perez, Jerome Euzenat, Aldo Gangemi, Y. Kalfoglou, D. Pisanelli, M. Schorlemmer, G. Steve, Ljilajana Stojanovic, Gerd Stumme, und York Sure. A survey on methodologies for developing, maintaining, integration, evaluation and reengineering ontologies. 2002. [PUMA: integration ontologies merging 2002 myown engineering ontology] URL