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Submitted on: 10 January 1999.
Revised on: 13 February 1999.
Accepted on: 24 February 1999.
Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria
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Submitted on: 23 July 2004.
Revised on: 28 August 2004.
Accepted on: 13 September 2004.
Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria
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Submitted on: 26 January 2020.
Revised on: 26 February 2020.
Accepted on: 15 March 2020.
Revista Internacional de Metodos Numericos para Calculo y Diseno en Ingenieria
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