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Submitted on: 24 October 2007.
Revised on: 13 February 2008.
Accepted on: 22 March 2008.
___________________Applied Ontology---IOS PRESS
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Submitted on: 20 March 2023.
Revised on: 18 July 2023.
Accepted on: 27 August 2023.
___________________Applied Ontology---IOS PRESS
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Submitted on: 17 April 1999.
Revised on: 31 May 1999.
Accepted on: 10 July 1999.
___________________Applied Ontology---IOS PRESS
Submitted on: 26 October 2006.
Revised on: 02 February 2007.
Accepted on: 21 March 2007.
___________________Applied Ontology---IOS PRESS