Mbouna, Amelie D. https://orcid.org/0000-0001-9267-6179
Tompkins, Adrian M.
Lenouo, Andre
Asare, Ernest O.
Yamba, Edmund I.
Tchawoua, Clement
Funding for this research was provided by:
Abdus Salam International Centre for Theoretical Physics
OPEC Fund for International Development
Article History
Received: 11 October 2018
Accepted: 31 October 2019
First Online: 10 November 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.