Dr. Yojana Goyal, Dr. Varsha Patil, Dr. Jyothsna Paranjape, and Dr. Kunal Uday Patil, “Comparative Study of Pre-Emptive Analgesia by Bilateral Superficial Cervical Plexus Block Induced by Levobupivacaine vs Ropivacaine in Thyroid Surgeries”, IJPRT, vol. 16, no. 2, pp. 5012–5017, Aug. 2026.