1. Cholangiocholecystography in Canine Medicine-Clinical Findings and Evaluation of 50 Cholangiograms using Bilivistan in Dogs;Ballarini;Veterinaria, Milano,1968
2. Altered Concepts of the Mechanism of Nonvisualization of the Gall Bladder;Berk;Radiology,1964
3. Oral Administration of Contrast Medium for Radiography of the Gall Bladder in the Dog;Boccadoro;Veterinaria, Milano,1963
4. Radiography of the Gall Bladder and Bile Ducts with Bilivistan in the Dog;Calvari;Veterinaria, Milano,1967