TY - JOUR AU - V. D. Batukhtin TI - On the problem of the extremum of discontinuous maps JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1985 SP - 157 EP - 158 VL - 40 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1985_40_4_a21/ LA - en ID - RM_1985_40_4_a21 ER -