VENKATRAMAN, R.; SANDHIYA, R. EVALUATION OF EFFICACY OF EPIDURAL BUTORPHANOL TARTRATE FOR POSTOPERATIVE ANALGESIA. International Journal of Pharmacy and Pharmaceutical Sciences, [S. l.], v. 7, n. 2, p. 52–54, 2015. Disponível em: https://journals.innovareacademics.in/index.php/ijpps/article/view/3837. Acesso em: 6 may. 2024.