Digital method of analyzing color parameters during PDF document verificationHolubnyk, Tetyana; Dubnevych, Myroslava; Boyarchuk, ArtemICyberPhyS 2025 : 2nd International Workshop on Intelligent and CyberPhysical Systems, Khmelnytskyi, Ukraine, July 04, 20252025 / p. 86-96 https://ceur-ws.org/Vol-4013/paper7.pdf Scopus