3Golan E,Krissoff B,Kuchler F. Traceability for food marketing & food safety: What's the next step?[J].Agricultural Outlook,2002,(1):21-25.
4The Electronic Commerce Council of Canada.Can-Trace January 19-29, 2004 consultation sessions summary notes[EB/OL].http://www.Can-trace.org,2004-02-10.
5The Electronic Commerce Council of Canada. Tracking and tracing of food products in Canada[EB/OL].http://www.Can-trace.org,2003-01-30.