NIKOLOV, Dimitar. DIGITAL TWINS AND VIRTUALIZED TESTBEDS FOR INVESTIGATING CYBERATTACKS AGAINST ELECTRIC POWER SYSTEMS. E-Journal VFU, [S. l.], n. 26, p. 1018–1029, 2026. Disponível em: https://ejournal.vfu.bg/index.php/vfu/article/view/411. Acesso em: 22 oct. 2026.