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:hebis:30-1095294
	http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/16137 STATUS : 429 → Skipping : http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/16137
	http://publikationen.ub.uni-frankfurt.de/files/16137/E001453463.pdf STATUS : 429 → Skipping : http://publikationen.ub.uni-frankfurt.de/files/16137/E001453463.pdf

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