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• Yousefi Nejad Attari.mahdi Optimizing the investment portfolio using the Markowitz model and fuzzy multi-objective programming (case study: Tehran Stock Exchange) [ Vol.19, Issue 68 - Summer Year 1403]
• yousefi.ommolbanin Designing and implementing a reliability centered maintenance(RCM) using key performance indicators (KPIs) and risk analysis (Case study: synthetic fiber raw material production company) [ Vol.19, Issue 70 - Winter Year 1403]