Submitted on: 27 November 2016.
Revised on: 15 March 2017.
Accepted on: 28 April 2017.
___________________Acta Technica Napocensis Series-Applied Mathematics Mechanics and Engineering
Submitted on: 12 February 2016.
Revised on: 08 May 2016.
Accepted on: 02 July 2016.
___________________Acta Technica Napocensis Series-Applied Mathematics Mechanics and Engineering
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Submitted on: 22 June 2009.
Revised on: 30 September 2009.
Accepted on: 06 November 2009.
___________________Acta Technica Napocensis Series-Applied Mathematics Mechanics and Engineering
Submitted on: 19 January 2010.
Revised on: 05 April 2010.
Accepted on: 05 May 2010.
___________________Acta Technica Napocensis Series-Applied Mathematics Mechanics and Engineering
Submitted on: 30 June 2021.
Revised on: 15 September 2021.
Accepted on: 20 October 2021.
___________________Acta Technica Napocensis Series-Applied Mathematics Mechanics and Engineering
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Submitted on: 10 December 2016.
Revised on: 01 April 2017.
Accepted on: 31 May 2017.
___________________Acta Technica Napocensis Series-Applied Mathematics Mechanics and Engineering