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• Nguyen.Phu A two-stage study of grey system theory and DEA in strategic alliance: An application in Vietnamese Steel industry [ Vol.7, Issue 2 - Spring Year 2019]
• Nguyen.Ty A two-stage study of grey system theory and DEA in strategic alliance: An application in Vietnamese Steel industry [ Vol.7, Issue 2 - Spring Year 2019]
• nouri.mojtaba A Novel Efficiency Ranking Approach Based on Goal Programming and Data Envelopment Analysis for the Evaluation of Iranian Banks [ Vol.7, Issue 1 - Winter Year 2019]