Nfor, Nkeh Oma http://orcid.org/0000-0002-9215-5960
YamgouƩ, Serge Bruno
Article History
Received: 16 March 2022
Accepted: 20 June 2022
First Online: 15 July 2022
Declarations
:
: The authors declares no conflicts of interest.
: This study was approved by the Scientific Committee of the Department of Physics, Higher Teacher Training College Bambili, The University of Bamenda, P. O. Box 39, Bambili-Cameroon.
: No informed concerned because experimental data were used, with the sources properly cited.