2012 journal article
B-mode and Doppler ultrasonography in pony mares with experimentally induced ascending placentitis
Equine Veterinary Journal, 44, 88–94.
By: C. Bailey, J. Heitzman, C. Buchanan, C. Bare, R. Sper, L. Borst, M. Macpherson, K. Archibald, M. Whitacre