7Geers R,Saatkamp H W,Goossens K,et al.TETRAD:an on-line telematic surveillance system for animal transports[J].Comput.Electron.Agric,1998,21:107-116. 被引量：1
8Pettitt R G.Traceability in the food animal industry and supermarket chains[J].Rev.Sci.Tech.Off.Int.Epiz,2001,20(2):584-597. 被引量：1
9Stanford K,J Stitt,J A Kellar,et al.Traceability in cattle and small ruminants in Canada[J].Rev.Sci.Tech.Off.Int.Epiz,2001,20(2):510-522. 被引量：1
