Authors
Marcel Hamda Soulouknga
Higher Normal School of Technical Education of Sarh, University of Sarh, Chad
Dumitru-Dorin Lucache
“Gheorghe Asachi” Technical University of Iaşi, Faculty of Electrical Engineering
Serge Yamigno Doka
University of Ngaoundéré, Faculty of Science, Department of Physics, Ngaoundere, Cameroon