M. S. A. Shaheen, K. . Sardar, A. N. . Chowdhury, S. K. . Mondal, R. . Ahmed, and S. S. . Alam, “Controlled Hypotension for Functional Endoscopic Sinus Surgery: A Comparative study between Dexmedetomidine versus Esmolol”, j Bangladesh Soc Anaesthesiologists, vol. 31, no. 2, pp. 67–74, Aug. 2018.