Boroujerdi Alavi, M., and M. Tabatabaei. “Adaptive Control of Depth of Anesthesia Using a Fractional Order Gradient Based Adaptation Mechanism”. Majlesi Journal of Electrical Engineering, Vol. 13, no. 1, Mar. 2018, pp. 79-84, http://www.mjee.org/index/index.php/ee/article/view/2556.