TY - JOUR AU - N. V. Beliakin TI - A means of modeling the classical second-order arithmetic JO - Algebra i logika PY - 1983 SP - 3 EP - 25 VL - 22 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AL_1983_22_1_a0/ LA - ru ID - AL_1983_22_1_a0 ER -