K10plus combines the former union catalogs of GBV and SWB covering 10 of 16 states of Germany, the Prussian Cultural Heritage Foundation and other research institutions such as those of Leibniz Association, Helmholtz Association and Max Planck Society.
K10plus-Zentral is an extension of K10plus with bibliographic data aggregated from other sources such as public libraries, PubMed, JSTOR, arXiv etc.
[4] The CBS data models used in GBV and SWB have been integrated to the common K10plus format.
Records can be linked for authority control and to model connections such as book series.
Records can be accessed via APIs such as SRU and have been made available as (Linked) Open Data.