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Submitted on: 30 July 2000.
Revised on: 08 September 2000.
Accepted on: 25 September 2000.
___________________Cuadernos de Gestion---UNIV PAIS VASCO, INST ECONOMIA APLICADA EMPRESA
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Submitted on: 15 March 2023.
Revised on: 20 June 2023.
Accepted on: 13 July 2023.
___________________Cuadernos de Gestion---UNIV PAIS VASCO, INST ECONOMIA APLICADA EMPRESA
Submitted on: 25 November 2023.
Revised on: 13 January 2024.
Accepted on: 09 February 2024.
___________________Cuadernos de Gestion---UNIV PAIS VASCO, INST ECONOMIA APLICADA EMPRESA