1. Azygos continuation of the caudal vena cava in a dog: radiographic and ultrasonographic diagnosis;Barthez;Veterinary Radiology & Ultrasound,1996
2. Congenital feline portosystemic shunts;Berger;Journal of the American Veterinary Medical Association,1986
3. Differentiation of intrahepatic versus extrahepatic portosystemic shunts in dogs using positive-contrast portography;Birchard;Journal of the American Animal Hospital Association,1989
4. Multiple extrahepatic portosystemic shunts in dogs: 30 cases (1981–1993);Boothe;Journal of the American Veterinary Medical Association,1996
5. Intrahepatic and extrahepatic portal venous anomalies in dogs: 52 cases (1982–1992);Bostwick;Journal of the American Veterinary Medical Association,1995