Toktam Zoughi and  Reza Boostani,  Presenting a Combinatorial Feature to Estimate Depth of Anesthesia.   journal   = {International Journal of Biomedical and Biological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2010, vol. 37(1). 10 - 14
    [viewed 21 October 2019]. Available from: https://publications.waset.org/pdf/14949.