1 There are some publications on cooperation in digital preservation to be mentioned: Altenhöner and Steinke, 2010; Altenhöner, Brantl, and Ceynowa, 2011; Trehub and Wilson, 2010; Walters and Skinner, 2010.
2 Until 2017 the collaboration of the German National Specialist Libraries had the name Goportis. The libraries gave up this label and their cooperation is now known as “the collaboration of the German National Specialist Libraries”. General information about collaboration in digital preservation can be found in https:// phaidra.univie.ac.at/view /o:377394.
3 There is an abundance of literature on digital preservation. E.g. nestor—network of expertise in long-term storage of digital resources in Germany ( https://www. langzeitarchivierung.de/Webs/nestor/EN/Home /) offers literature and other information material in English (see https://www.langzeitarchivierung.de/Webs/ nestor/EN/Publikationen/publikationen_node.html ). Famous is the OAIS-Model that describes the whole process of digital preservation ( http://www.oais.info /).
4 A broad description of the identification of skills needed for digital preservation can be found in Bähr, Lindlar, and Vlaeminck (2011).
5 ETH went productive in 2012 with workflows for its E-Collection and in 2014 for the preservation of research data.
6 The data seal of approval has been transferred to the Core Trust Seal meanwhile. See https://www.coretrustseal.org/about/history/data-seal-of-approval/ .
7 The nestor seal is an extended self evaluation that is reviewed by members of the nestor working group for certification ( https://www.langzeitarchivierung.de/Webs/ nestor/EN/Zertifizierung/nestor_Siegel/siegel.html ).
8 See: https://www.goportis.de/en/digital-preservation/goportis-long-term-digital archives-preservation-policy.html .
9 Preservation policy of TIB see: https://www.tib.eu/en/service/tib-preservation policy/ , of ZB MED: https://www.zbmed.de/fileadmin/user_upload/Profil/PDFs/ ZB_MED_Preservation_Policy.pdf , of ZBW: https://www.zbw.eu/en/about-us/ key-activities/digital-preservation/preservation-policy/ .
10 Information on DRUG is available at http://dachela.org/DACHELA .