J. Surendra, C. Khatri, B. FS, and T. Abhilasha, “Comparison of prophylactic infusion of phenylephrine and norepinephrine for prevention of hypotension in elective caesarean section under spinal anaesthesia- A randomized controlled study”, Int. J. Heal. Clin. Res., vol. 4, no. 2, pp. 76–82, Jan. 2021.