Abstract
Keywords
(2009). -. Sharif Journal of Mechanical Engineering, 25(No . 50), 56-58.
. "-". Sharif Journal of Mechanical Engineering, 25, No . 50, 2009, 56-58.
(2009). '-', Sharif Journal of Mechanical Engineering, 25(No . 50), pp. 56-58.
-. Sharif Journal of Mechanical Engineering, 2009; 25(No . 50): 56-58.
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