TY - JOUR AU - Malmir, Mohammad AU - کاظمی متین, رضا AU - Ahadzadeh namin, Mahnaz TI - Efficiency analysis in two-stage production systems with the presence of undesirable and reversible factors JO - Journal of New Researches in Mathematics VL - 9 IS - 4 SP - 0 EP - 0 PY - 2024 DO - 10.30495/jnrm.2022.66444.2236 ER -