International Journal of Supply and Operations Management 1 3 2014 11 01 Analyzing the Operations Strategies of Manufacturing Firms Using a Hybrid Grey DEA approach – A case of Fars Cement Companies in Iran371 391 en Mohamad Amin Kaviani Department of Industrial Engineering,College of Engineering,Shiraz branch, Islamic Azad University, Shiraz , Iran Mehdi Abbasi Department of Industrial Engineering,College of Engineering,Shiraz branch, Islamic Azad University, Shiraz , Iran 2014 11 28 Operations strategy Competitive advantages Performance objectives Efficient frontier Prioritizing Grey DEA http://www.ijsom.com/pdf_2174_5e318638f9b669028df3d4d39a45ce65.html