Toufik, Mekkaoui
Atangana, Abdon
Article History
Received: 25 July 2017
Accepted: 12 September 2017
First Online: 30 October 2017
Change Date: 24 January 2022
Change Type: Update
Change Details: The original online version of this article was revised to correct equation 14.
Change Date: 1 February 2022
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1140/epjp/s13360-022-02380-9