Updates are available Correction dated 2018-11-15

Article History

Received: 29 April 2018

Accepted: 24 July 2018

First Online: 2 August 2018

Change Date: 15 November 2018

Change Type: Correction

Change Details: The authors quite agree that the AsI model is first developed by Panagiotis Petrantonakis from references [11] and [18] in their thesis.

Compliance with ethical standards

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: The authors declare that they have no conflict of interest.