F. Business, E. Pol, E. Pol, and T. Archives. (2013-02-02)Sprache: en ; Rechte-Information: Metadata may be used without restrictions as long as the oai identifier remains attached to it. ; Dokumenttyp: Text ; Dokument-ID: oai:CiteSeerX.psu:10.1.1.269.7263 ; Quelldatenbank: BASE.