| Affiliation: | 1. Department of Statistics and Operations Researches, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;2. Department of Mathematics, Faculty of Science, King Khaled University, P.O. Box 9004, Abha, Saudi Arabia;3. Department of Mathematics, Faculty of Science, Mansoura University, Mansoura 35516, Egypt;1. Department of Statistics and Operations Researches, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;2. Department of Mathematics, Faculty of Science, Mansoura University, Mansoura 35516, Egypt |
