Pashov, Lyubomir. “RESEARCH OF MATHEMATICAL MODEL FOR OPERATIONS TO DETERMINE RISKS FOR PROTECTIONS OF CRITICAL INFRASTRUCTURE”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 3, no. 1 (March 5, 2023): 98–100. Accessed November 24, 2024. https://jsar.ftn.shu.bg/ojs-3.3.0-7/index.php/jsar/article/view/70.