1. Alexander TJL. Methods of disease control. In: Leman AD, Straw BE, Glock RD, Mengeling WL, Penny RHC and Scholl 1986, Editors. Diseases of Swine. 6th edition. Ames, Iowa. p 778-802.
2. Muirhead MR. Herd biosecurity. In: International Pig Letter Symposium. Quebec; 1991. p. 41–4.
3. Moore C. Biosecurity and minimal disease herds. Vet Clin North Am Food Anim Pract. 1992;8:461–74.
4. Amass SF, Kirk Clark L. Biosecurity considerations for pork production units. J Swine Health Prod. 1999;7:217–28.
5. Barceló J, Marco E. On-Farm biosecurity. In: Proceedings of the 15th IPVS Congress. Birmingham, England. Editors: M A Varley; Stanley Done; Jill Thomson and International Pig Veterinary Society. Editoral: Scientific Committee of the 15th IPVS Congress; 1988. p. 129–33.