1. A. S. Kleshchev and E. A. Shalfeeva, “Classification of Ontology Properties. Ontologies and Their Classifications,” Nauchno-Tekhnicheskaya Informatsiya, Ser. 2., No. 9, 16–22 (2005).
2. W. B. Teeuw and H. Berg, “On the Quality of Conceptual Models,” in Proceedings of ER’97 Worksjop on Behavioral Models and Design Transformations: Issues and Opportunities in Conceptual Modeling, Los Angeles, USA, 1997.
3. R. M. Colomb and R. Weber, “Completeness and Quality of an Ontology for an Information System,” in Proceedings of International Conference on Formal Ontology in Information Systems, Trento, Italy, 1998 (IOS-Press, Amsterdam, 1998), pp. 207–217.
4. P. Assenova and P. Johannesson, “Improving Quality in Conceptual Modeling by the Use of Schema Transformations,” in Proceedings of 15th International Conference on Conceptual Modeling, Cottbus, Germany, 1996 (Springer, 1996), http://www.dsv.su.se/:_petia/Publications/kval.pdf .
5. R. Studer, V. R. Benjamins, and D. Fensel, “Knowledge Engineering, Principles and Methods,” Data Knowledge Eng., Nos. (1–2), 161–197 (1998).