Sarma, G. D., R. Sanyal, V. K. Khemka, S. S. A. Hossaini, and R. Basu. “Comparative Study of Ropivacaine (0.5%) Versus Levobupivacaine (0.5%) As Regional Anesthesia in Gynecological Surgeries: A Tertiary Care Hospital Based Study at Eastern India”. International Journal of Health and Clinical Research, vol. 4, no. 7, Apr. 2021, pp. 41-44, https://ijhcr.com/index.php/ijhcr/article/view/1296.