1. Ecma, T.C.: Office Open XML (2006)
2. ISO/IEC 29500-1:2012 - Information technology – Document description and processing languages – Office Open XML File Formats – Part 1: Fundamentals and Markup Language Reference (2012). http://www.iso.org/iso/home/store/catalogue_ics/catalogue_detail_ics.htm?csnumber=61750. Accessed 30 October 2014
3. Bell, D.E., La Padula, L.J.: Secure computer system: Unified exposition and Multics interpretation (1976)
4. Lunt, T.F.: Polyinstantiation: an inevitable part of a multilevel world. In: 1991 Proceedings of Computer Security Foundations Workshop IV, pp. 236 –238 (1991)
5. Wiseman, S.: Lies, Damned Lies and Databases (1991)