TY - JOUR AU - Jahangirfard, Majid AU - Hajalian, Farshad AU - Zamanian, Ali reza TI - Clustering Iranian Gas Industry Managers and Ranking Their Competencies via the EFQM Excellence Model-based Evaluation with an Artificial Intelligence Approach JO - Quarterly Journal of Training and Development of Human Resources VL - 8 IS - 31 SP - 51 EP - 80 PY - 2022 DO - 10.52547/istd.31542.8.31.51 ER -