1. Toutanova, K., Klein, D., Manning, C., Singer, Y.: Feature-Rich Part-of-Speech Tagging with a Cyclic Dependency Network. In: HLT-NAACL, pp. 252–259 (2003)
2. Giunchiglia, F., Soergel, D., Maltese, V., Bertacco, A.: Mapping large-scale Knowledge Organization Systems. In: 2nd International Conference on the Semantic Web and Digital Libraries, ICSD (2009)
3. Studer, R., Benjamins, V.R., Fensel, D.: Knowledge engineering: principles and methods. Data and Knowledge Engineering 25, 161–197 (1998)
4. Gruber, T.R.: A translation approach to portable ontology specifications. Knowledge Aquisition 5(2), 199–220 (1993)
5. Baader, F., Calvanese, D., McGuinness, D., Nardi, D., Patel-Schneider, P.F.: The Description Logic Handbook: Theory, Implementation and Applications. Cambridge University Press (2002)