1. Castration by the Burdizzo;Campbell;The Veterinary Record,1929
2. Xylazine hydrochloride epidural analgesia – a method of providing sedation and analgesia to facilitate castration of mature bulls;Caulkett;Compendium of Continuing Education for Practicing Veterinarians,1993
3. Bloodless castrator;Clarke-Lewis;The Veterinary Record,1977
4. Bloodless castrators;Cox;The Veterinary Record,1977
5. Castration of calves; a study of the methods used by farmers in the United Kingdom;Kent;The Veterinary Record,1996