Santos, G.C.A. et al. 2015. Clinical evaluation of postoperative analgesia provided by ketoprofen associated with intravenous or epidural morphine in bitches undergoing ovariosalpingohysterectomy. Semina: Ciências Agrárias. 36, 2 (Apr. 2015), 817–826. DOI:https://doi.org/10.5433/1679-0359.2015v36n2p817.