1. Adams HR: Veterinary Pharmacology and Therapeutics. 7th ed. Iowa State University Press, Ames, 1995, 1181 pp.
2. Anonymous: Case closed on pyrazolidones? Animal Pharm. 1997, 384, 3.
3. Backer P, Braeckman R, Belpaire and Backere M: Bioavailability and pharmacokinetics of phenylbutazone in the cow. J. vet. Pharm. Therap. 1980, 3, 29–33.
4. Bishop YM: The Veterinary Formulary. 3rd ed. The Pharmaceutical Press, London, 1996, 513 pp.
5. Chavez Moreno J, Bickhardt K: Zum Nachweis von Gewebsläsionen nach intramuskulärer Injektion durch Bestimmung der Creatinkinase-Aktivität im Blutplasma. (Demonstration of lesions in tissue after intramuscular injection by determination of creatine kinase activity in blood plasma). Dtsch. tierärztl. Wschr. 1997, 104, 512–515.