1. Unité de Recherche de Mécanique et de Modélisation des Systèmes Physiques (UR-2MSP), Faculty of Sciences, University of Dschang, Dschang, Cameroon
2. Department of Mechanical Engineering and Manufacturing, Fotso Victor University Institute of Technology, University of Dschang, Dschang, Cameroon
3. Department of Mechanical Engineering, Higher Technical Teacher Training College, University of Douala, Douala, Cameroon