1. LEER LaboratoryFaculty of Engineering and ScienceUniversity of Souk AhrasBP 155341000Souk AhrasAlgeria
2. University of Picardie Jules Verne, MIS (E.A.4290)33, rue Saint‐Leu80039AmiensFrance
3. Department of Engineering, Faculty of Engineering and ScienceUniversity of AgderN‐4879GrimstadNorway