V. P. Borkar Patil, M. G. Tambakhe, S. S. Lawhale, and J. J. Upadhye, “Hemodynamic response in laparoscopic cholecystectomy after magnesium sulphate versus clonidine administration”, Int J Res Med Sci, vol. 6, no. 10, pp. 3239–3245, Sep. 2018.