M. Siahkohian, H. Farhadi, A. Naghizadeh Baghi and A. Valizadeh
Journal of Applied Sciences 8 ( 4 ): 723 - 726 , 2008
A. Valizadeh, M. Shafieefar, J.J. Monaghan and S.A.A. Salehi Neyshaboori
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