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Submitted on: 30 April 1998.
Revised on: 14 August 1998.
Accepted on: 17 September 1998.
___________________Bauphysik---ERNST & SOHN
Submitted on: 13 August 2011.
Revised on: 23 October 2011.
Accepted on: 17 November 2011.
___________________Bauphysik---ERNST & SOHN
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Submitted on: 03 May 2009.
Revised on: 04 August 2009.
Accepted on: 23 August 2009.
___________________Bauphysik---ERNST & SOHN
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Submitted on: 27 February 1998.
Revised on: 28 April 1998.
Accepted on: 14 June 1998.
___________________Bauphysik---ERNST & SOHN
Submitted on: 18 July 2011.
Revised on: 18 October 2011.
Accepted on: 01 December 2011.
___________________Bauphysik---ERNST & SOHN
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