TY - JOUR AU - pouralizadeh, Mojgan TI - A DEA Model for Estimating Directional Return to Scale in Sustainable Supply Chains: A Case Study in the Power Industry JO - Journal of New Researches in Mathematics VL - 11 IS - 6 SP - 0 EP - 0 PY - 2025 DO - 10.30495/jnrm.2023.71655.2380 ER -