1. Ubro red dry cow suspension, Boehringer Ingelheim, UK http://www.noahcompendium.co.uk (accessed 22.10.08).
2. Mamyzin® injection technical monograph, Boehringer Ingelheim, UK http://www.mamyzin.co.uk/Mamyzinmonograph.pdf (accessed 22.04.09).
3. Etiological agents of bovine mastitis;Watts;Vet. Microbiol.,1988
4. Basic mastitis bacteriology: untangling the pathogens;Mason;Ir. Vet. J.,2006
5. Absorption of antibiotics by the bovine udder;Ziv;J. Dairy Sci.,1975