Carvalho, F. de S.R., Miglino, M.A., Severino, R.S., Ferreira, F.A. and Santos, T.C. dos 2001. Morphological features of the umbilical cord in equine (Equus caballus, Linnaeus, 1758). Brazilian Journal of Veterinary Research and Animal Science. 38, 5 (Jan. 2001), 214-219. DOI:https://doi.org/10.1590/S1413-95962001000500003.