Robert M. Colomb, Kerry Raymond, Lewis Hart, Patrick Emery, Chris Welty, Guo Tong Xie, Elisa F. Kendall. The Object Management Group Ontology Definition Metamodel. In Coral Calero, Francisco Ruiz, Mario Piattini, editors, Ontologies for Software Engineering and Software Technology. pages 217-247, Springer, 2006. [doi]