Hovedkilder
Guidelines for using XML for Electronic Data Interchange
Extensible Markup Language (XML) 1.0
Martin Bryan, The SGML Centre, http://www.sgml.u-net.com
UN/CEFACT/TMWG OO-EDI compability with XML/EDI
Open-edi: ISO/IEC JTC1 SC32 WG1, IS 14662
UN-EDIFACT: ISO 9735, ISO / TC 154
The European XML/EDI Pilot Project
XML/EDI group: www.xmledi.net
http://www.nr.no/gem/xml/