Al-Baddai, S. , Al-Subari, K. , Lang, E. , Ludwig, B. (2017), 'Optimizing Approach for Sifting Process to Solve a Common Type of Empirical Mode Decomposition Mode Mixing', World Academy of Science, Engineering and Technology, Open Science Index 126, International Journal of Electrical and Computer Engineering, 11(6), 717 - 725.