Use of propofol alone or in comination with remifentanil for maintenance of anesthesia in dogs undergoing cataract surgery: a comparison with isoflurane - Paula, V. V; Kahvegian, M. A. P; Safatle, Angélica de Mendonça Vaz; Cortopassi, Silvia Renata Gaido; Fantoni, Denise Tabacchi (World Congress of Veterinary Anaesthesiology, 2006)