ERROR
Failed to connect to cbsopac.rz.uni-frankfurt.de port 80 after 7010 ms: Couldn't connect to server
in: http://resolver.hebis.de/wikimedia/pndresolver/133545024
to: http://cbsopac.rz.uni-frankfurt.de/DB=2.1/CHARSET=UTF-8/REL?PPN=19155605X&COOKIE=U203,K203,I251,B1999++++++,SN,NDefault+login,D2.1,Ed1f98f17-6f4,A,H,R80.74.159.159,FY