Submitted on: 24 March 2017.
Revised on: 14 May 2017.
Accepted on: 25 May 2017.
___________________Applied Ontology---IOS PRESS
Submitted on: 13 March 2001.
Revised on: 19 June 2001.
Accepted on: 06 July 2001.
___________________Applied Ontology---IOS PRESS
Submitted on: 16 October 2001.
Revised on: 17 December 2001.
Accepted on: 10 February 2002.
___________________Applied Ontology---IOS PRESS
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Submitted on: 15 September 2016.
Revised on: 07 October 2016.
Accepted on: 20 November 2016.
___________________Applied Ontology---IOS PRESS
Submitted on: 27 June 2009.
Revised on: 04 October 2009.
Accepted on: 27 October 2009.
___________________Applied Ontology---IOS PRESS
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Submitted on: 27 May 2001.
Revised on: 29 August 2001.
Accepted on: 27 September 2001.
___________________Applied Ontology---IOS PRESS
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