TY - JOUR AU - V. A. Zakharov TI - Approximation of abstract semantics by formal models of programs JO - Diskretnaya Matematika PY - 1998 SP - 119 EP - 141 VL - 10 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DM_1998_10_4_a7/ LA - ru ID - DM_1998_10_4_a7 ER -