Nikolov, Dimitar. “DIGITAL TWINS AND VIRTUALIZED TESTBEDS FOR INVESTIGATING CYBERATTACKS AGAINST ELECTRIC POWER SYSTEMS”. E-Journal VFU, no. 26 (October 21, 2026): 1018–1029. Accessed October 22, 2026. https://ejournal.vfu.bg/index.php/vfu/article/view/411.