PETRUSHAK, VOLODYMYR. “APPLICATION OF THE DOUBLE MATCH METHOD FOR DETERMINING THE CARRIER FREQUENCY OF HIDDEN INFORMATION TRANSMISSION SYSTEMS”. Herald of Khmelnytskyi National University. Technical sciences 341, no. 5 (October 31, 2024): 360–364. Accessed January 26, 2026. https://heraldts.khmnu.edu.ua/index.php/heraldts/article/view/493.