1. Mechanics and Adapted Materials Laboratory (LAMMA), ENSET, University of Douala, Cameroon
2. Research Unit in Engineering of Industrial Systems and the Environment (UR-ISIE), IUT/FV Bandjoun, University of Dschang, Cameroon
3. Research Unit in Mechanics and Modelling of Physical Systems (UR2MSP), Faculty of Science, University of Dschang, Cameroon
4. Laboratory of Physics and Mechanics Textiles (LPMT), Université de Haute-Alsace, France
5. Mechanics Laboratory (LM), ENSET, University of Douala, Cameroon
6. Université de Strasbourg, France
7. Laboratoire de Valorisation des Ressources Forestières et du Bois, Advanced Technical Teacher’s Training School (ENSET), University of Douala, Cameroon
8. Laboratoire de Photochimie et d'Ingénierie Macromoléculaires, Université de Haute Alsace, 3b rue Alfred Werner, Mulhouse cedex, France