TY - JOUR TI - Special Issue: Mathematical Methods in Economy and Industry 2017 JO - Kybernetika PY - 2018 SP - 1105 EP - 1105 VL - 54 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KYB_2018__54_6_a0/ LA - en ID - KYB_2018__54_6_a0 ER -