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Motallebzadeh, R. , Hajizadeh, S. , Ghasemi, M.. "Numerical Study of Laminar Mixed Convection Heat Transfer of a Nanofluid in a Concentric Annular Tube Using Two-Phase Mixture Model ". World Academy of Science, Engineering and Technology, Open Science Index 87, International Journal of Aerospace and Mechanical Engineering, (2014), 8(3), 568 - 575.