<http://webisa.webdatacommons.org/404096618> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/prov/317124330> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/404096618> . <http://webisa.webdatacommons.org/404096618> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.de> . <http://webisa.webdatacommons.org/404096618> <http://www.w3.org/ns/prov#value> "With regard to these operations, in particular the problems posed by the application of a facing, specifications DE-OS No. 3,036,816 and DE-OS No. 3,325,341 are cited, and the subject matter disclosed in these references is likewise incorporated by reference herein." .