1. Department of Mathematical Sciences, College of Science, United Arab Emirates University, Al Ain, Abu Dhabi, UAE
2. V.I. Romanovskiy Institute of Mathematics, Uzbekistan Academy of Sciences, Tashkent, Uzbekistan
3. School of Natural Sciences and Engineering, New Uzbekistan University, Tashkent, Uzbekistan
4. Central Asain University, Tashkent Region, Uzbekistan
5. Department of Mathematics Faculty of Science, Tafila Technical University, Tafila, Jordan