Tang, Feng; Zhang, Yin; Yuan, Bin; Li, Yuan; Zhang, Wen-Bo; Zhang, Guan-Jun: 'Ageing condition assessment of oil-paper insulation using near infrared spectroscopy detection and analytical technique', The Journal of Engineering, 2018, DOI: 10.1049/joe.2018.8516
IET Digital Library, https://digital-library.theiet.org/;jsessionid=12k146mscpgj5.x-iet-live-01content/journals/10.1049/joe.2018.8516