Evolution analysis on security program requirements for operation and maintenance service providers in IEC 62443
GONG Gangjun, MENG Zhiruo, TIAN Huiwen, LIU Ren, JIN Lu
Huadian Technology . 2021, (2): 77 -82 .  DOI: 10.3969/j.issn.1674-1951.2021.02.013