Further reading
- DOUGLAS, S.W., HERRTAGE, M.E. & WILLIAMSON, H, D. (1987) Contrast media techniques. In Principles of Veterinary Radiography. London, Baillère Tindall. pp 240–286
- HERITAGE, M. E. & DENNIS, R. (1995) Contrast media and techniques. In Manual of Small Animal Diagnostic Imaging. Cheltenham, BSAVA. pp 47–154