1. The heart and arteries;Evans,1979
2. Ultrasonographic anatomy of the normal canine kidney;Konde;Vet Radiol,1984
3. Renal ultrasonography in healthy cats;Walter;Am J Vet Res,1987
4. Ultrasonographic-anatomic correlation and an imaging protocol of the normal canine kidney;Wood;Am J Vet Res,1990
5. The urogenital apparatus;Christensen,1979