to the list of allowed endpoint for federated queries.
Responsible for the endpoints is
ZBW - Leibniz Information Centre for Economics
My email contact is firstname.lastname@example.org
At most times, it is possible to do federated queries the other way round, but that involves obtaining, e.g., all items with GND IDs in the first step from WDQS and then joining with a small custom set. Calling from within WDQS would lower load and speed up queries.