Vikas Aron, and Kapil Lamba. “A Comparative Analysis of Ropivacaine- Fentanyl Vs Bupivacaine-Fentanyl in Labour Analgesia”. Academia Anesthesiologica International 4, no. 2 (December 14, 2019): 234-236. Accessed September 26, 2026. http://aijournals.com/index.php/aan/article/view/1131.