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Beyene, Wondwossen Mulualem (2017). "Metadata and universal access in digital library environments". Library Hi Tech. 35 (2): 210–221. doi:10.1108/LHT-06-2016-0074. hdl:10642/5994.
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Steiner, Tobias (23 November 2017). "Metadaten und OER: Geschichte einer Beziehung (Metadata and OER: [hi]story of a relationship)". Synergie. Fachmagazin für Digitalisierung in der Lehre (in German). 04: 54. doi:10.17613/m6p81g. ISSN2509-3096.