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Submitted on: 01 March 2001.
Revised on: 10 June 2001.
Accepted on: 05 July 2001.
___________________JOURNAL OF SANDWICH STRUCTURES & MATERIALS
Submitted on: 01 December 2014.
Revised on: 10 January 2015.
Accepted on: 15 February 2015.
___________________JOURNAL OF SANDWICH STRUCTURES & MATERIALS