Kuznetsov, A.A., N.A. Poluyanenko, V.A. Katrich, S.O. Kandii, and Yu.A. Zaichenko. “Investigation of Heuristic Search Functions for Nonlinear Substitutions for Symmetric Cryptography”. Radiotekhnika 3, no. 206 (September 24, 2021): 53–63. Accessed November 21, 2024. http://rt.nure.ua/article/view/246431.