Li, Xi; Wang, Xiaohua; Xie, Dingli; Wang, Xinqiao; Yang, Aijun; Rong, Mingzhe: 'Time–frequency analysis of PD-induced UHF signal in GIS and feature extraction using invariant moments', IET Science, Measurement & Technology, 2018, 12, (2), p. 169-175, DOI: 10.1049/iet-smt.2017.0287
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1yuw7gpkx1so2.x-iet-live-01content/journals/10.1049/iet-smt.2017.0287