Fajardo, M. A., M. A. Lesmes, and L. A. Cardona. “Evaluation of Postoperative Analgesic Effect of Intraoperative Infusions of Tramadol and tramadol/lidocaine/ketamine Compared With morphine/lidocaine/Ketamine in Female Dogs Undergoing Ovariohysterectomy”. Archivos de Medicina Veterinaria 44, no. 2 (August 31, 2012): 145–153. Accessed May 19, 2024. http://revistas.uach.cl/index.php/amv/article/view/5145.