TY - JOUR AU - H. Sh. Pham TI - Duality in convex multivalued discrete systems JO - Differencialʹnye uravneniâ PY - 1984 SP - 1611 EP - 1620 VL - 20 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1984_20_9_a19/ LA - ru ID - DE_1984_20_9_a19 ER -