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:101:1-20100325326
	http://www.rwi-essen.de/media/content/pages/publikationen/ruhr-economic-papers/REP_09_090.pdf RESTEASY004655: Unable to invoke request: org.apache.http.conn.ConnectTimeoutException: Connect to www.rwi-essen.de:80 [www.rwi-essen.de/194.94.247.250] failed: Connect timed out
	http://d-nb.info/1001127773/34 STATUS : 301 → Redirecting to : https://d-nb.info/1001127773/34
	https://d-nb.info/1001127773/34 STATUS : 404 → Skipping : https://d-nb.info/1001127773/34

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