In our project, we are merging and enriching multiple sources. However, we only offer a subset of the K10Plus data which is connected to our local resources here at the SLUB-Dresden. Therefore also data for the enrichment process (via GND, wikidata, and GeoNames) are only available fitting to our local resources.
The ground work of our data are the authority and bibliographic data of the K10Plus cluster. This data is furthermore enriched with data from GND (in particular over their linked data API Entityfacts), Wikidata, and GeoNames.
All Sources provide their data over Public Domain licenses.