1. Department of Mathematics, Jamia Millia Islamia, New Delhi, India
2. Faculty of Mathematics and Statistics, Ton Duc Thang University, Ho Chi Minh City, Vietnam
3. Department of Engineering Science, Bandırma Onyedi Eylül University, Bandırma, Balıkesir 10200, Turkey
4. Department of Mathematics, Amity University, Kolkata, West Bengal, India
5. Department of Mathematics, APS University, Rewa, Madhya Pradesh, India