Kalenski, T. do A. et al. 2012. Identification of the microorganisms involved in severe sepsis caused by pyometra in bitches undergoing ovariohysterectomy. Brazilian Journal of Veterinary Research and Animal Science. 49, 2 (Apr. 2012), 130–138. DOI:https://doi.org/10.11606/issn.2318-3659.v49i2p130-138.