With this function, the resolver checks all associated URLs and marks them either with a green tick or, in the event of an error, with a red cross. Users are redirected to the first URL marked in green.

Analyse	urn:nbn:de:0144-200712135012
	http://www.oei.fu-berlin.de/politik/publikationen/AP66.pdf STATUS : 301 → Redirecting to : https://www.oei.fu-berlin.de/politik/publikationen/AP66.pdf
	https://www.oei.fu-berlin.de/politik/publikationen/AP66.pdf STATUS : 404 → Skipping : https://www.oei.fu-berlin.de/politik/publikationen/AP66.pdf
	https://d-nb.info/992505577/34 Success. Document available.

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