1. Programme d'analyse des troupeaux laitiers du Québec. Rapport annuel. 1998–2003.
2. Animal summary;Michigan Dairy Herd Improvement Association,1981
3. Prevalence of chronic teat-end lesions and their relationship to intramammary infection in 22 herds of dairy cattle;Sieber;J Am Vet Med Assoc,1981
4. Epidemiology of teat lesions in a dairy herd: II. associations with subclinical mastitis;Agger;Nord Vet Med,1986
5. Milk yield, somatic cell counts, and risk of removal from the herd for dairy cows after covered teat canal injury;Geishauser;J Dairy Sci,1999