1. Quantum Leap Africa (QLA), AIMS Rwanda Centre, Remera Sector KN 3, Kigali, Rwanda
2. Institut de Mathématiques et de Sciences Physiques (IMSP/UAC) Laboratoire de Topologie Fondamentale, Computationnelle et Leurs Applications (Lab-ToFoCApp), BP 613 Porto-Novo, Benin
3. African Center for Advanced Studies (ACAS), P.O. Box 4477, Yaoundé, Cameroon
4. Department of Mathematics and Applied Mathematics, Sefako Makgatho Health Sciences University, Ga-Rankuwa, South Africa
5. DDE, G.J.U.S.T, Hisar, 125001 Haryana, India