1. Brown, A.: Digital preservation guidance note 1: Selecting file formats for long-term preservation (2008). URL http://www.nationalarchives.gov.uk/documents/selecting-file-formats.pdf . Access: 2016-10-25.
2. Consultative Committee for Space Data Systems: Reference model for an open archival information system (OAIS). Recommended practice. (2012). URL http://public.ccsds.org/pubs/650x0m2.pdf . Access: 2016-10-25.
3. Ghosh, P.: Google’s Vint Cerf warns of ‘digital Dark Age’. URL http://www.bbc.com/news/science-environment-31450389 . BBC News. Access: 2016-10-25.
4. Huhnlein, D., Korte, U., Langer, L., Wiesmaier, A.: A comprehensive reference architecture for trustworthy long-term archiving of sensitive data. In: 2009 3rd International Conference on New Technologies, Mobility and Security, pp. 1–5. IEEE (2009).
5. International Standard Organization: Space data and information transfer systems – audit and certification of trustworthy digital repositories (2012). URL http://www.iso.org/iso/catalogue_detail.htm?csnumber=56510 .