فهرس المقالات Metals Supply Chain حرية الوصول المقاله صفحة الملخص نص كامل 1 - Customer Clustering by a Novel Combined TOPSIS-Fuzzy and K-Means Approach To Design an Efficient Customer Relationship System: A Real-life Case Study in the Copper Industry Hossein Mohammadi Dolat-Abadi Amirsadra Sadat