Pei, Mochao, Hongru Li, and He Yu. “A Novel Three-Stage Feature Fusion Methodology and Its Application in Degradation State Identification for Hydraulic Pumps”. Measurement Science Review 21, no. 5 (September 17, 2021): 123–135. Accessed November 23, 2024. https://journals.savba.sk/index.php/msr/article/view/1805.