“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”, Sir Salimullah Med. Coll. J., vol. 30, no. 2, pp. 115–122, Oct. 2022, doi: 10.3329/ssmcj.v30i2.61926.