Yadav, R. K., G. R. Bajracharya, and J. N. Pokhrel. “Ketamine As an Alternative to Midazolam Co-Induction to Propofol: A Comparative Study”. Journal of Society of Anesthesiologists of Nepal, vol. 2, no. 2, Sept. 2015, pp. 62-66, http://www.jsan.org.np/jsan/index.php/jsan/article/view/68.