1. Principles of ultrasound application in animals;Rantanen;Vet Radiol,1981
2. Gray-scale ultrasonography of the canine abdomen;Nyland;Vet Radiol,1981
3. Diagnostic real time ultrasonography of the liver of the dog and cat;Cartee;JAAHA,1981
4. Ultrasonic diagnosis of renal disease in small animals;Cartee;JAVMA,1980