1. PG and Research Department of Mathematics, Cauvery College for Women (Autonomous), Trichy-18 Affiliated to Bharathidasan University, Trichy, India
2. Department of Mathematics, Faculty of Arts and Science, Yildiz Technical University, Esenler, 34210, Istanbul, Turkey
3. Department of Logistics, University of Defence in Belgrade, Belgrade, Serbia
4. Department of Mathematics and Statistics, International Islamic University, Islamabad, Pakistan
5. Quantum Leap Africa (QLA) AIMS Rwanda Center, Remera Sector KN 3, Kigali, Rwanda
6. Institut de Mathématiques et de Sciences Physiques (IMSP/UAC), Laboratoire de Topologie Fondamentale, Computationnelle et leurs Applications (Lab-ToFoCApp), BP 613, Porto-Novo, Benin
7. African Center for Advanced Studies, P.O. Box 4477, Yaounde, Cameroon