[3] XML Schemaデータ型に基づくデータモデルを採用しています。
[13] OWL 2 Web Ontology Language New Features and Rationale (Second Edition) () https://www.w3.org/TR/2012/REC-owl2-new-features-20121211/
[14] OWL 2 Web Ontology Language Quick Reference Guide (Second Edition) () https://www.w3.org/TR/2012/REC-owl2-quick-reference-20121211/