Wang, Kewen, Yajun Shang, Yongzheng Lu, and Tianran Lin. “An Improved Second-Order Multi-Synchrosqueezing Transform for the Analysis of Non-Stationary Signals”. Journal of Dynamics, Monitoring and Diagnostics 2, no. 3 (August 15, 2023): 183–189. Accessed May 17, 2024. https://ojs.istp-press.com/dmd/article/view/207.