1. ANSI/NISO. Guidelines for the construction, format, and management of monolingual thesauri. Ansi/niso z39.19-2003 (2003)
2. Fellbaum, C. (ed.): WordNet: An Electronic Lexical Database. Bradford Books (1998)
3. International Organization for Standardization. Documentation - guidelines for the establishment and development of monolingual thesauri. Iso 2788-1986 (1986)
4. Goldbeck, J., Fragoso, G., Hartel, F., Hendler, J., Parsia, B., Oberthaler, J.: The National Cancer Institute’s Thesaurus and Ontology. Journal of Web Semantics 1(1) (December 2003), http://www.mindswap.org/papers/WebSemantics-NCI.pdf
5. Hollink, L., Schreiber, A.T., Wielemaker, J., Wielinga, B.J.: Semantic annotation of image collections. In: Handschuh, S., Koivunen, M., Dieng, R., Staab, S. (eds.) Knowledge Capture 2003 – Proceedings Knowledge Markup and Semantic Annotation Workshop, pp. 41–48 (2003)