Xin, Z.; Jie, S.; Wenwei, A.; Tiantian, Y.; Malekian, R. An Improved Time-Frequency Representation Based on Nonlinear Mode Decomposition and Adaptive Optimal Kernel. ELEKTRON ELEKTROTECH 2016, 22 (4), 52-57. https://doi.org/10.5755/j01.eie.22.4.15918.