1. International Chair in Mathematical Physics and Applications (ICMPA), University of Abomey-Calavi, Cotonou, Benin
2. Department of Marine Science and Technology, Federal University of Technology, Akure, Nigeria
3. Laboratoire de Physiques et Applications LHA, UNSTIM, Cotonou, Benin
4. Laboratoire d’Hydrologie Marine et Côtiére, Intitut de Recherches Halieutiques et Océanologiques du Bénin, Cotonou, Benin