1. Université Grenoble Alpes Laboratoiry AGEIS EA 7407, AGIM Team, UFR SHS Grenoble Cedex 09 France
2. Department of Mathematics College of Science, King Khalid University Abha Saudi Arabia
3. Laboratoire Statistique et Processus Stochastiques. University Djillali Liabès Sidi Bel Abbes Algeria
4. Department of Statistics & Operations Research, Faculty of Science Kuwait University Safat Kuwait