**Author details**

Mariame Coulibaly Ecole Normale Superieure d'Abidjan, Abidjan, Côte d'Ivoire

\*Address all correspondence to: coulibaly.mariame@ensabj.ci; mamecoul2002@yahoo.fr

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
