فهرست مقالات Iranian insurance companies دسترسی آزاد مقاله صفحه چکیده متن کامل 1 - The Relationship between Returns to Scale and Size of Companies using Data Envelopmment Analysis in Iranian Insurance Companies Elham Sadeghi Mohsen Rostami Malkhalife Mohammadreza Miri Lavasani Mohamadhamed Khanmohamadi