TY - JOUR AU - A. A. Razborov TI - Lower bounds of the complexity of symmetric boolean functions of contact-rectifier circuits JO - Matematičeskie zametki PY - 1990 SP - 79 EP - 90 VL - 48 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1990_48_6_a9/ LA - ru ID - MZM_1990_48_6_a9 ER -