TY - JOUR AU - Iranzadeh, Soleyman AU - Norouzi, Davood AU - Babaei Heravi, Sadegh TI - A Survey on Employees Performance Appraisal Systems by Using the Fuzzy Tree Model JO - Journal of Strategic Management in Industrial Systems VL - 6 IS - 17 SP - 115 EP - 132 PY - 2011 DO - ER -