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:gbv:18-228-7-1562
	http://epub.sub.uni-hamburg.de/informatik/volltexte/2010/156/ STATUS : 302 → Redirecting to : https://epub.sub.uni-hamburg.de/informatik/volltexte/2010/156/
	https://epub.sub.uni-hamburg.de/informatik/volltexte/2010/156/ STATUS : 404 → Skipping : https://epub.sub.uni-hamburg.de/informatik/volltexte/2010/156/

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