1. Risk factors for transmission of Streptococcus agalactiae infection between Danish dairy herds: a case control study;Agger;Vet. Res.,1994
2. Evaluation of the surveillance program of Streptococcus agalactiae in Danish dairy herds;Andersen;J. Dairy Sci.,2003
3. Rapport om mastitisbekæmpelse for året 1981;Anonymous,1981
4. Annual Reports on the Danish Mastitis Control Programme;Anonymous,1980
5. Bekendtgørelse om overvågning af mastitis (ministerial order no. 225);Anonymous,2005