1. Agreement on the Application of Sanitary and Phytosanitary Measureshttp://www.wto.org
2. Technical specifications on harmonized epidemiological indicators for public health hazards to be covered by meat inspection of swine;EFSA J.,2011
3. Terrestrial Animal Health Codehttp://www.oie.int/index.php?id=169&L=0&htmfile=chapitre_1.11.6.htm
4. Council Directive 64/432/EEC on animal health problems affecting intra-community trade in bovine animals and swine;Off. J.,1964
5. Animal Health in Denmark 2011http://www.foedevarestyrelsen.dk/Publikationer/Alle%20publikationer/2012095.pdf