B. Dhali, S. Bhattacharya, R. P. Ganguly, S. Bandyopadhyay, M. Mondal, and M. Dutta, “A randomized trial of intravenous labetalol & oral nifedipine in severe pregnancy induced hypertension”, Int J Reprod Contracept Obstet Gynecol, vol. 1, no. 1, pp. 42–46, Dec. 2016.