Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Seiji Kumagai and X. Wang and Noboru Yoshimura,Fractal analysis on the recovery of contaminant properties of silicone rubber insulator against acid rain,Proceedings of 1998 International Symposium on Electrical Insulating Materials. 1998 Asian International Conference on Dielectrics and Electrical Insulation. 30th Symposium on Electrical Insulating Materials (IEEE Cat. No.98TH8286),,Inst. Electr. Eng. Japan,2002-11-27,,,619-622,https://cir.nii.ac.jp/crid/1870583642920179072,https://doi.org/10.1109/iseim.1998.741819