Submitted on: 12 January 2010.
Revised on: 13 April 2010.
Accepted on: 08 May 2010.
___________________Journal of the Faculty of Engineering and Architecture of Gazi University
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Submitted on: 04 July 2003.
Revised on: 26 July 2003.
Accepted on: 07 August 2003.
___________________Journal of the Faculty of Engineering and Architecture of Gazi University
Submitted on: 07 April 2014.
Revised on: 19 June 2014.
Accepted on: 16 August 2014.
___________________Journal of the Faculty of Engineering and Architecture of Gazi University
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