A comparative study of 0.5% hyperbaric Ropivacaine versus 0.5% hyperbaric Bupivacaine for spinal anaesthesia. International Journal of Biomedical and Advance Research, [S. l.], v. 7, n. 6, p. 286–291, 2016. DOI: 10.7439/ijbar.v7i6.3419. Disponível em: https://ssjournals.co.in/index.php/ijbar/article/view/3419. Acesso em: 17 feb. 2026.