1. Govt. Nagarjuna Post Graduate College of Science, Raipur 492001, Chhattisgarh, India
2. Mathematics Division, School of Advanced Sciences and Languages, VIT Bhopal University, Kothrikalan, Sehore, Madhya Pradesh 466114, India
3. Department of Mathematics and Applied Mathematics, University of Johannesburg, Kingsway Campus, Auckland Park, 2006 Johannesburg, South Africa
4. Department of Computer Science and Mathematics, Lebanese American University, Beirut, Lebanon
5. Department of Mathematics, College of Science and Humanities in Al-Kharj, Prince Sattam bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
6. Department of Basic Engineering Science, Faculty of Engineering, Menoufia University, Shebin El-Kom 32511, Egypt