1. Bush, E.J., 1995. The 1995 NAHMS Swine Grower/Finisher Study. Proc. 79th Annual Meeting, Livestock Conservation Institute, Kansas City, MO
2. Centers for Disease Control., 1991. Trichinella spiralis infection – United States, 1990. Morbid. Mortal. Wkly. Rpt. 40(4), 57–60
3. Code of Federal Regulations., 1994. Animals and Animal Products. Office of the Federal Register, Government Printing Office, Washington D.C., pp. 212–220
4. A trichinosis outbreak in Iowa;Currier;J. Am. Med. Assoc.,1983
5. EEC., 1977. Commission Directive 77/96/EEC. Official Journal of the European Communities, 26, 67–77