“Outcome of Low-Dose 0.5% Levobupivacaine (Plain) And Low-Dose 0.5% Bupivacaine (Heavy) Combined with Fentanyl in Spinal Anaesthesia For Transurethral Resection of Prostate: A Comparative Study” (2022) Sir Salimullah Medical College Journal, 30(2), pp. 115–122. doi:10.3329/ssmcj.v30i2.61926.