KHADSE, P. B.; CHHATRAPATI, S. S.; KAMBLE, T. S. Comparison of clonidine and fentanyl as an adjuvant to bupivacaine in unilateral spinal anaesthesia. International Journal of Research in Medical Sciences, [S. l.], v. 6, n. 2, p. 521–527, 2018. DOI: 10.18203/2320-6012.ijrms20180291. Disponível em: https://www.msjonline.org/index.php/ijrms/article/view/4538. Acesso em: 13 oct. 2025.