1. Abecker, A., Sheth, A., Mentzas, G., Stojanovich, L. (eds.): Proceedings AAAI Spring Symposium "Semantic Web Meets eGovernment", Stanford University, March 27-29, 2006. AAAI Press, Menlo Park (2006)
2. Lecture Notes in Computer Science;B. Berčič,2003
3. European Communities (ed.): European Interoperability Framework for pan-European eGovernment Services (version 1.0). Office for Official Publications of the European Communities, Luxembourg (2004),
http://europa.eu.int/idabc/en/document/3761
4. Furdik, K., Hreno, J., Sabol, T.: Conceptualisation and Semantic Annotation of eGovernment Services in WSMO. In: Snášel, V. (ed.) Proc. of Znalosti (Knowledge) 2008, pp. 66–77. STU, Bratislava, Slovakia (2008)
5. Gurevich, Y.: Evolving Algebras 1993: Lipari Guide. In: Börger, E. (ed.) Specification and Validation Methods, pp. 9–36. Oxford University Press, Oxford (1995)