The following publications are possibly variants of this publication:
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- Towards Ontological Foundations for UML Conceptual ModelsGiancarlo Guizzardi, Heinrich Herre, Gerd Wagner. coopis 2002: 1100-1117 [doi]
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- Grounding Software Domain Ontologies in the Unified Foundational Ontology (UFO): The case of the ODE Software Process OntologyGiancarlo Guizzardi, Ricardo de Almeida Falbo, Renata S. S. Guizzardi. cibse 2008: 127-140
- Ontological foundations for conceptual modellingGiancarlo Guizzardi, Terry A. Halpin. ao, 3(1-2):1-12, 2008. [doi]
- A Unified Foundational Ontology and some Applications of it in Business ModelingGiancarlo Guizzardi, Gerd Wagner. caise 2004: 129-143