Okhrimenko, Andrew, Oleksandr Stokipnnyi, and Vladislav Kovtun. “COMPARATIVE ANALYSIS OF STANDARDS AND REGULATORY DOCUMENTS FOR LONG-TERM PRESERVATION AND VALIDATION OF ELECTRONIC DOCUMENTS AND SIGNATURES”. Ukrainian Information Security Research Journal 27, no. 2 (December 25, 2025): 106–113. Accessed June 12, 2026. http://jrnl.kai.edu.ua/index.php/ZI/article/view/21185.