GOALBAYE, Touroumgaye; DIALLO, Mariama Dalanda; MADJIMBE, Guiguindibaye; ZOUGOULOU, Ali Mahamat; GUISSE, Aliou. European Scientific Journal, ESJ, [S. l.], v. 13, n. 9, p. 316, 2017. DOI: 10.19044/esj.2017.v13n9p316. Disponível em: https://last.eujournal.org/index.php/esj/article/view/9027. Acesso em: 12 feb. 2026.