TY - JOUR AU - Ya. Shitov TI - Tropical lower bound for extended formulations. II. Deficiency graphs of matrices JO - Izvestiya. Mathematics PY - 2019 SP - 184 EP - 195 VL - 83 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_2019_83_1_a8/ LA - en ID - IM2_2019_83_1_a8 ER -