Institution: | Department of Mathematics & Statistics, Sultan Qaboos University, P.O.Box: 36, PC 123, Al-Khod, Muscat, Oman;Department of Mathematics & Statistics, Jordan University of Science &Technology, P.O.Box: 3030, Irbid 22110, Jordan and Department of Mathematical Sciences, United Arab Emirates University,P.O.Box: 17551, Al-Ain, UAE |