Submitted on: 05 March 2019.
Revised on: 20 May 2019.
Accepted on: 01 July 2019.
___________________EPMA Journal---SPRINGER INT PUBL AG
Submitted on: 23 January 2022.
Revised on: 23 April 2022.
Accepted on: 08 May 2022.
___________________EPMA Journal---SPRINGER INT PUBL AG
Submitted on: 07 December 2012.
Revised on: 04 February 2013.
Accepted on: 05 March 2013.
___________________EPMA Journal---SPRINGER INT PUBL AG
Submitted on: 12 May 2014.
Revised on: 20 August 2014.
Accepted on: 14 October 2014.
___________________EPMA Journal---SPRINGER INT PUBL AG
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Submitted on: 25 July 2004.
Revised on: 19 August 2004.
Accepted on: 14 October 2004.
___________________EPMA Journal---SPRINGER INT PUBL AG
Submitted on: 22 February 2016.
Revised on: 14 May 2016.
Accepted on: 10 June 2016.
___________________EPMA Journal---SPRINGER INT PUBL AG
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Submitted on: 21 July 2010.
Revised on: 31 August 2010.
Accepted on: 04 October 2010.
___________________EPMA Journal---SPRINGER INT PUBL AG