TY - JOUR AU - D. A. Burov TI - On the existence of special nonlinear invariants for round functions of XSL-ciphers JO - Diskretnaya Matematika PY - 2021 SP - 31 EP - 45 VL - 33 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DM_2021_33_2_a3/ LA - ru ID - DM_2021_33_2_a3 ER -