Nataliia, Balandina, Trofymenko Olena, and Yevdokymov Denys. “Analysis of the Correspondence Between DCT and Non-Classical Walsh-Hadamard Transforms for Code-Controlled Steganography”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 18, no. 1 (March 31, 2026): 9–17. Accessed April 4, 2026. https://jtec.utem.edu.my/jtec/article/view/6485.