Department of Mathematics;
University of Carthage;
Faculty of Sciences of Bizerta;
BP W;
7021 Zarzouna;
Bizerta;
Tunisia;
REGIM-lab: Research Groups on Intelligent Machines;
University of Sfax;
National Engineering School of Sfax (ENIS);
BP 1173;
Sfax 3038;
Tunisia;
VSB Technical University of Ostrava;
Czech Republic;