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:715-oops-18677
	http://oops.uni-oldenburg.de/1786 STATUS : 500 → Server error during contacting : http://oops.uni-oldenburg.de/1786

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