1. Research Unit of Automation and Applied Computer, Electrical Engineering Department of IUT-FV of Bandjoun, University of Dschang, Dschang, Cameroon
2. Department of Mechanical, Petroleum and Gas Engineering, Faculty of Mines and Petroleum Industries, University of Maroua, Maroua, Cameroon
3. School of Geology and Mining Engineering, University of Ngaoundere, Ngaoundere, Cameroon
4. Nonlinear Systems and Applications, Faculty of Electrical & Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam