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Altenhöner, R.: Data for the future : the German project "Co-operative development of a long-term digital information archive" (kopal) (2006)
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Cantara, L.: METS: the metadata encoding and transmission standard (2005)
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Gartner, R.: Metadata in the digital library : building an integrated strategy with XML (2021)
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Dobratz, S.; Neuroth, H.: nestor: Network of Expertise in long-term STOrage of digital Resources : a digital preservation initiative for Germany (2004)
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Mitchell, J.S.; Vizine-Goetz, D.: DDC taxonomy server (2000)
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