Boedeker, Nancy C., Hayek, Lee-Ann C., Murray, Suzan, de Avila, David M., and Brown, Janine L. 2012. "
Effects of a gonadotropin-releasing hormone vaccine on ovarian cyclicity and uterine morphology of an Asian elephant (elephas maximus)."
Journal of Zoo and Wildlife Medicine, 43, (3) 603–614.
https://doi.org/10.1638/2011-0270.1.