1. ANON (1995) Sistema de información de la producción lechera. In Programas de Mejora Bovina en el Pais Vasco. Eds C. Ugarte, P. Guerrero. Vitoria-Gazteiz, Gobierno Vasco y Diputaciones Forales de Araba, Bizkaia y Gipuzkoa. pp 3982
2. Herd-level risk factors associated with Leptospira spp seroprevalence in dairy and beef cattle in Spain;ALONSO-ANDICOBERRY, C.; GARCÍA-PEÑA, F.J.; PEREIRA-BUENO, J.; COSTAS, E.; ORTEGA-MORA, L.M.;Preventive Veterinary Medicine,2001
3. Infectious diseases causing bovine abortion and fetal loss;BARR, B.C.; ANDERSON, M.L.;Veterinary Clinics of North America: Food Animal Practice,1993
4. Incidence of antibodies to some serotypes of Leptospira in pigs in the Netherlands in the period 1975-1980;BERCOVICH, Z.; SPEK, C.W.; COMVALIUS-ADRIAAN, I.;Tijdschrift voor Diergeneeskunde,1983
5. Prevalence of antibodies of Leptospira serovars in beef cattle in central Queensland;BLACK, P.F.; CORNEY, B.G.; SMYTHE, L.D.; DOHNT, M.F.; NORRIS, M.A.; SYMONDS, M.L.;Australian Veterinary Journal,2001