Ye, S. , Park, J. , Kim, J. , Jung, J. , Jeon, A. , Kim, I. , Son, J. , Nam, K. , Baik, S. , Ro, J. , Jeon, G.. "Development for the Evaluation Index of an Anesthesia Depth using the Bispectrum Analysis". World Academy of Science, Engineering and Technology, Open Science Index 6, International Journal of Medical and Health Sciences (2007), 1(6), 414 - 418.